Factorise : 8x³ - 27y³ + …
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Yogita Ingle 4 years, 2 months ago
8x3−27y3+125z3+ 90xyz
Using,
a3+b3+c3−3abc=(a+b+c)(a2+b2+c2−ab−bc−ca)
Here,
a=2x
b=−3y
c=5z,
Therefore,
=>(2x)3+(−3y)3+(5z)3−3×2x×(−3y)×5z
=(2x−3y+5z)(4x2+9y2+25z2+6xy+15yz−10xz)
2Thank You