Question

guys please help me to do it.
that will mean alot to me!

Answer 1

Answer: 1. 16x2-25y2

(4x)2 - (5y)2

a2-b2 = (a+b)(a-b)

(4x-5y)(4x+5y)

Step-by-step explanation:

Answer 2

1)
16X^2- 25Y^2

(4X)^2- (5 Y)^2

(4X+5Y)(4X-5Y)
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4)
3(4m^2- 9)

=3{(2m)^2 -(3)^2}

=3(2m+3)(2m-3)

7)
(2a-b)2 -(4z)^2

=(2a-b+4z)(2a-b-4z)
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10)
a^4 -16b^4

=(a)^4 -(2b)^4

=(a+2b)(a-2b)(a^2 +4b^2)
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13)

(6l)^2 -(m+n)^2

=(6l+m+n)(6l-m-n)
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16)

x^3- 144x

=x{(x)^2 -(12)^2}

=x(x+12)(x-12)
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19)

(3+2a)^2 -(5a)^2


=(3+2a+5a)(3+2a-5a)

=(3+7a)(3-3a)

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22)

75a^3b^2 -108ab^4

=3xy^2{( 5x)^2 -(6y)^2}

=3xy^2( 5x+6y)(5x-6y)
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25)

256x^5- 81x

=x(256x^4 -81)

=x{4x)^4 -(3)^4}

=x(4x+3)(4x-3)


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