How do you multiply polynomials (x^{2}+2x-1)(x^{2}+2x+5)?

Lyric Morris

Lyric Morris

Answered question

2022-02-03

How do you multiply polynomials (x2+2x1)(x2+2x+5)?

Answer & Explanation

anthonystb5

anthonystb5

Beginner2022-02-04Added 11 answers

Use a table or modified foil instead.
x2(x2+2x+5)=x4+2x3+5x2 
2x(x2+2x+5)=2x3+2x2+10x 
1(x2+2x+5)=x22x5 
Simply add up each one.
x4+2x3+5x2+2x3+2x2+10xx22x5 
x4+2x3+2x3+5x2+2x2x2+10x2x5 
x4+4x3+6x2+8x5

iluvyou234521ip

iluvyou234521ip

Beginner2022-02-05Added 12 answers


Given- 
(x2+2x1)(x2+2x+5) 
(x2×x2)+(2x×x2)(1×x2)+(x2×2x)+(2x×2x)(1×2x) 
+(x2×5)+(2x×5)(1×5) 
x4+2x3x2+2x3+4x22x+5x2+10x5 
x4+2x3+2x3x2+4x2+5x22x+10x5 
x4+4x3+8x2+8x5

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