Question

Factorize Completely:
a) : (x + y)(a + b) - (y + z)(a + b)
b) : x² - 9y²​

Answer 1

Step-by-step explanation:

9y2−66yz+121z2

Using (a−b)2=a2+b2−2ab

=(3y)2+(11z)2−2×3y×11

=(3y−11z)2

Answer 2

Answer:

Step-by-step explanation:

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thanks for the answer