1.(5x2)(–2x3) 2.(x+3)(x+2) 3.(4x^2-4x-7)(x+3) 4.(x+2)(x^3+3x^2+4x-17)
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Originally Posted by william 1.(5x2)(–2x3) 2.(x+3)(x+2) 3.(4x^2-4x-7)(x+3) 4.(x+2)(x^3+3x^2+4x-17) 1. -10x^5 because you multiply then add the exponents because the rule for multiplying exponents is to add them together
Originally Posted by william 1.(5x2)(–2x3) 2.(x+3)(x+2) 3.(4x^2-4x-7)(x+3) 4.(x+2)(x^3+3x^2+4x-17) 2. use FOIL x^2+2x+3x+6 x^2+5x+6
Originally Posted by william 1.(5x2)(–2x3) 2.(x+3)(x+2) 3.(4x^2-4x-7)(x+3) 4.(x+2)(x^3+3x^2+4x-17) 3.4x^2(x)-4x(x)-7(x)+4x^2(3)-4x(3)-7(3) =4x^3-4x^2+12x^2-7x-12x-21 =4x^3+8x^2-19x-21
Originally Posted by william 1.(5x2)(–2x3) 2.(x+3)(x+2) 3.(4x^2-4x-7)(x+3) 4.(x+2)(x^3+3x^2+4x-17) 4.x^3+3x^2+4x-17 x+2 =x^4+5x^3+10x^2-9x-34
thank you very much!
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