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Factorise 4x²+9y²+16z²+12xy-24yz-16xzalso, which identities will be used here? |
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Answer» = 4x²+9y²+16z²+12xy-24yz-16xz = (2X)²+ (3Y)²+ (-4Z)²+2(2x)(3y)+2(3y)(-4z)+2(2x)(-4z) = [(2x)+(3y)+(-4z)]² = [2x+3y-4z]² [a+b+c]² = a²+b²+c²+2ab+2bc+2ac |
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