If x = –3, then x2 – 2x + 1 = ?

Mathematics

2 answers:

Alina [70]3 years ago

7 0

-3(2)-2(-3)+1
-6+6+1
1

alukav5142 [94]3 years ago

5 0

Since I just realized that you meant x^2-2x+1, let me evaluate this step by step:

x^2-2x+1
((-3)^2)-(2(-3))+1
9-(-6)+1
9+6+1
16

Therefore, that would equal 16.

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Given:

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The FOIL method states that:

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$(x^2-12x+27)(x-4)\\\\= (x^2\times x)+ (x^2\times -4)+(-12x\times x)+(-12x\times -4)+(27\times x)+(27\times -4)\\\\=x^3-4x^2-12x^2+48x+27x-108\\\\=x^3-16x^2+75x-108...........(\because-12x^2-4x^2=-16x^2,48x+27x=75x)$