Math, asked by prakruthipai, 4 months ago



can anyone help me with these three questions. if anyone is answered is also enough.​

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Answers

Answered by Λყυѕн
17

Answer:

1.(x-2y)² +7(x-2y)+12

Let (x-2y) be 'a'

⇒A/q-

⇒(a)²+7(a)+12

⇒a²+3a+4a+12

⇒a(a+3)+4(a+3)

⇒(a+4)(a+3)

Putting value of a

⇒(x-2y+4)(x-2y+3)

2.(3a-b)² -4(3a-b)+4

Let (3a-b) be 'x'

⇒A/q-

⇒x²-4x+4

⇒x²-2x-2x+4

⇒x(x-2)-2(x-2)

⇒(x-2)(x-2)

⇒(x-2)²

Putting value of x

⇒(3a-b-2)²

⇒(3a-b-2)(3a-b-2)

3.(3x-4y)²+2(3x-4y)-35

Let (3x-4y) be 'a'

⇒A/q-

⇒(a)²+2a-35

⇒a²-7a+5a-35

⇒a(a-7)+5(a-7)

⇒(a+5)(a-7)

Putting value of a

⇒(3x-4y+5)(3x-4y-7)

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