Question

factorise
4x^2+16y^2+25z^2+16xy-40yz-20xz
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Answer 1

The above equation is the expansion of the formulae (x+y-z) ^2

That means the answer is (2x+4y-5z) ^2

Answer 2

Answer:

4x²+16y²+25z²+16xy-40yz-20xz

Identity used:a²+b²+c²+2ab+2bc+2ca=(a+b+c)²

(2x)²+(4y)²+(-5z)²+2(2x)(4y)+2(4y)(-5z)+2(-5z)(2x)

(2x+4y-5z)²

Step-by-step explanation:

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