Factorise:15x⁴-10x³-25x²
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(3x-5)(5x^3+5x^2).ans
Step-by-step explanation:
=15x^4-10x^3-25x^2
=5x^2(3x^2-2x-5)
=5x^2(3x^2-5x+3x-5)
=5x^2{x(3x-5)+1(3x-5)}
=5x^2{(3x-5)(x+1)}
=(3x-5)(5x^3+5x^2)
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