6. (X+4)(X + 4), | 7 (2+ - 5)(2+ 2013 5) |, 8. (3-4m), 9. (2h + 7)(2-7), 10. (8 - 3x)(8 + 3x)

6. (x+4)(x + 4)
| 7 (2+ - 5)(2+ – 5) |
8. (3-4m)
9. (2h + 7)(2-7)
10. (8 - 3x)(8 + 3x)

 

Answer and Step-by-step explanation:

1.(x+4)(x+4)

=(x+4)(x+4)

=(x)(x)+(x)(4)+(4)(x)+(4)(4)

=x²+4x+4x+16

=x²+8x+16

2.

(2t−5)(2t−5)

=(2t+−5)(2t−5)

=(2t)(2t)+(2t)(−5)+(−5)(2t)+(−5)(−5)

=4t²−10t−10t+25

=4t²−20t+25

3.

=−4m+3

or

(3−4m)²

=(3+−4m)(3−4m)

=(3)(3)+(3)(−4m)+(−4m)(3)+(−4m)(−4m)

=9−12m−12m+16m²

=16m²−24m+9

4.

(2h+7)(2−7)

=−10h−35

if

(2h+7)(2h−7)

=(2h+7)(2h−7)

=(2h)(2h)+(2h)(−7)+(7)(2h)+(7)(−7)

=4h²−14h+14h−49

=4h²−49

5.

(8−3x)(8+3x)

=(8−3x)(8+3x)

=(8)(8)+(8)(3x)+(−3x)(8)+(−3x)(3x)

=64+24x−24x−9x²

=−9x²+64

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