Question

factorise the following expressions
a) x^4+2x²y²+y^4
b) 49x²-36
c) 9x²y²-16
d) 63a²-112b²

Answer 1

Answer:

Answers are given below step by step

Step-by-step explanation:

a. x4+2x2y2+y4

=(X2+y2)2

=(X square +y square ) whole square

b.(7x)2 - (6)2

=(7x+2)(7x-2)

c. (3xy)2 - (4)2

=(3xy+4) (3xy-4)

d. 7(9a square - 16b square)

=7(3a+4b)(3a-4b)

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Answer 2

Step-by-step explanation:

ur answer was already given my dear nanba