**The problems and examples in the video are arranged from basic to difficult**

**from start to finish..**

**Practice Exercises:**

**1.) ( r + 6 ) ^2**

**2.) ( r - 6 ) ^ 2**

**3.) ( x - 5 )^2**

**4.) ( 4x - 8 ) ^2**

**5.) ( 5x + 3y ) ^2**

**6.) ( 7a - 5x^2 y) ^2**

**7.) ( 9a^2 b^2 - 5 b^2 ) ^2**

**8.) [ (a + 2) - 4 ] ^2**

## 1 comment:

1.(r+6)^2

=r^2+r6+r6+6^2

=r^2+2r6+6^2

2.(r-6)^2

=r^2-r6-r6+6^2

=r^2-2r6+6^2

3.(x-5)^2

=x^2-5x-5x+5^2

=x^2-10x+5^2

4.(4x-8)^2

=(4x)^2-(4x)(8)-(4x)(8)+(8)^2

=4x^2-32x-32x+16

=4x^2-64x+16

5.(5x+3y)^2

=5x^2+(5x)(3y)+(5x)(3y)+(3y)^2

=10x^2+(15xy)+(15xy)+(6y)^2

=10x^2+30xy+6y^2

6.(7a-5x^2y)^2

=(7a)^2-(7a)(5x^2y)-(7a)(5x^2y)+(5x^2y)^2

=28a^2-35x^2ay-35x^2ay+25x^4y^2

=28a^2-70x^ay+25x^4y^2

7.(9a^2b^2-5b^2)^2

=9a^2b^2-(9a^2b^2)(5b^2)-(9a^2b^2)(5b^2)+(5b^2)

=36a^2b^2-45a^22b^2-45a^22b^2+25b^2

=36a^2b^2-90a^2b^2+25b^2

8.[(a+2)+4]^2

=a^2+(2)(2)+4^2

=a^2+2a+8

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