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4 years ago

Factorise (x+y)^2-(4-x)^2

Mathematics

1 answer:

vovikov84 [41]4 years ago

4 0

Answer:

by using the identity a square - b square = (a+b)*(a-b)

a = x+y

b=4-x

= (x+y + 4-x)(x+y - 4-x)

y+4 * x+y -4+x

y+4*2x+y-4

2xy+y square -4y + yx + 4x + 4y - 16 +4x

3xy +y square + 8x -16

Step-by-step explanation:

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4 years ago

Factorise (x+y)^2-(4-x)^2​

Factorise (x+y)^2-(4-x)^2