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