How do you FOIL (2x-3)(x^{2}+5x-3)?

Katelynn Cunningham

Katelynn Cunningham

Answered question

2022-02-04

How do you FOIL (2x3)(x2+5x3)?

Answer & Explanation

Katherine Trevino

Katherine Trevino

Beginner2022-02-05Added 9 answers

This is where FOIL is not quite enough - Its
Pierce Carey

Pierce Carey

Beginner2022-02-06Added 10 answers

Alternatively, working with each of the powers of x from x3 down to x0 (i.e. the constant term), match the terms in the first and second bracketed expressions which will multiply to give that power of x and add them together, thus:
Given: (2x3)(x2+5x3)
x3:2x×x2=2x3
x2:(2x×5x)+(3×x2)=10x23x2=7x2
x1:(2x×3)+(3×5x)=6x15x=21x
x0:3×3=9
Added, give 2x3+7x221x+9

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