find the product (5x+4) (x²-3x) and verify the result for x=-1
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Hi
( 5x + 4) ( x^2 - 3x )
= 5x^3 - 15x^2 + 4x^2 - 12x
= 5x^3 - 11x^2 - 12x
5 * (-1)^3 - 11 * (-1)^2 - 12 * (-1)
= -5 - 11 + 12
= - 16 + 12
= - 4
I hope it’s helpful ;-)
( 5x + 4) ( x^2 - 3x )
= 5x^3 - 15x^2 + 4x^2 - 12x
= 5x^3 - 11x^2 - 12x
5 * (-1)^3 - 11 * (-1)^2 - 12 * (-1)
= -5 - 11 + 12
= - 16 + 12
= - 4
I hope it’s helpful ;-)
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