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Multiply the polynomials (x+4)(x^2-5x+3)
4 months ago
Q:
multiply the polynomials (x+4)(x^2-5x+3)
Accepted Solution
A:
(4x2 – 4x – 7)(x + 3)
= (4x2 – 4x – 7)(x) + (4x2 – 4x – 7)(3)
= 4x2(x) – 4x(x) – 7(x) + 4x2(3) – 4x(3) – 7(3)
= 4x3 – 4x2 – 7x + 12x2 – 12x – 21
= 4x3 – 4x2 + 12x2 – 7x – 12x – 21
= 4x3 + 8x2 – 19x – 21