Difference+of+Two+Squares

Here is a tutorial on the difference of two squares to view as a class. media type="youtube" key="lH-3vE1fJLA?rel=0" height="360" width="480" align="center"
 * __Difference of Two Squares __** Open this file and save it to your laptop with the notes for today's lesson.  [[file:2B Diff of 2 Squares.notebook]]

Now attempt the questions below. 1. Expand these products and simplify. a) (x + 4)(x - 4) b) (a + 1)(a - 1)  c) (m + 2)(m - 2)  d) (n + 7)(n - 7)  e) (p - 5)(p + 5)  f) (q - 6)(q + 6)  g) (x - 3)(x + 3)  h) (y - 9)(y + 9)  i) (10 + x)(10 - x)  j) (5 + a)(5 - a)  <span style="color: #000080; font-family: 'Comic Sans MS',cursive; font-size: 150%;">k) (8 - x)(8 + x)  <span style="color: #000080; font-family: 'Comic Sans MS',cursive; font-size: 150%;">l) (11 - m)(11 + m)  <span style="color: #000080; font-family: 'Comic Sans MS',cursive; font-size: 150%;">m) (x + t)(x - t)  <span style="color: #000080; font-family: 'Comic Sans MS',cursive; font-size: 150%;">n) (a - b)(a + b)  <span style="color: #000080; font-family: 'Comic Sans MS',cursive; font-size: 150%;">o) (m + n)(m - n)  <span style="color: #000080; font-family: 'Comic Sans MS',cursive; font-size: 150%;">p) (p - q)(p + q)   <span style="font-family: 'Comic Sans MS',cursive; font-size: 150%;">Now watch this tutorial from MathsOnline for more information about the difference of two squares before continuing with the questions below. <span style="font-family: 'Comic Sans MS',cursive; font-size: 150%;">Difference of Two Squares <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">2. Express as the difference of two squares. <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">a) (2a + 1)(2a - 1) <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">b) (3x + 2)(3x - 2)  <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">c) (5m + 3)(5m - 3)  <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">d) (9q + 2)(9q - 2)  <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">e) (4t - 3)(4t + 3)  <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">f) (7x - 1)(7x + 1)  <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">g) (8n - 5)(8n + 5)  <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">h) (10x - 3)(10x + 3)  <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">i) (2x + y)(2x - y)  <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">j) (4a + 3b)(4a - 3b)  <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">k) (5p + 2k)(5p - 2k)  <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">l) (3m - n)(3m + n)  <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">m) (2m - 5n)(2m + 5n)  <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">n) (2p - 3q)(2p + 3q)  <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">o) (x - 5y)(x + 5y)  <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">p) (12x - 5y)(12x + 5y)