Question

Efectuați folosind formulele:
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Answer 1

Răspuns:

Explicație pas cu pas:

a)x²+2x+1

b)x²+4x+4

c)x²+6x+9

d)x²-2x+1

e)x²-4x+4

f)x²-6x+9

g)9x²-6x+1

h) 4x²+4x+1

i) 4x²-4x+1

j)9x²+6x+1

Answer 2

Raspuns:

Explicație pas cu pas:

a)(x+1)^2=x^2+2x×1+1^2=x^2+2x+1^2

b)(x+2)^2=x^2+2x×2+2^2=x^2+4x+2^2

c)(x+3)^2=x^2+2x×3+3^2=x^2+6x+9

d)(x-1)^2=x^2-2x×1+1^2=x^2-2x+1

e)(x-2)^2=x^2-2x×2+2^2=x^2-4x+4

f)(x-3)^2=x^2-2x×3+3^2=x^2-6x+9

g)(3x-1)^2=(3x)^2-2×3x×1+1^2=9x^2-6x+1

h)(2x+1)^2=(2x)^2+2×2x×1+1^2=4x^2+4x+1

i)(2x-1)^2=(2x)^2-2×2x×1+1^2=4x^2-4x+1

j)(3x+1)^2=(3x)^2+2×3x×1+1^2=9x^2+6x+1

k)(2x-3)^2=(2x)^2-2×2x×3+3^2=4x^2-12x+9

l)(4x+3)^2=(4x)^2+2×4x×3+3^2=16x^2+24x+9