25x²+16y²+4z²-40xy+16yz-20xz, Factorise it.
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we have taken answer as -5x becoz in the question two variables have( -) sign in - 40xy and - 20xz in both of these negative numbers x is common so we will take 5x as negative
hope its helpful
hope its helpful
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ANSWER:
25x²+16y²+4z²-40xy+16yz-20xz
= (5x)²+(4y)²+(2z)²+2×5x×4y+2×4y
×2z+2×5x×2y
= (-5x+4y+2z)²
=(-5x+4y+2z) (-5x+4y+2z)
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