Question

a)(2x-2)^2+(6x-8)^2
b)(x+9)^2-(x-6)^2
c)(10X+3)^2+(x+7)^2
d)(x-3)^2-(x-15)^2
vă rog mult dau coroană e urgenttt plizzzzz​

Answer 1

Folosim urmatoarea formula de calcul prescurtat:

(a±b)²=a²±2ab+b²

a)

(2x-2)²+(6x-8)²=4x²-8x+4+36x²-96x+64=40x²-104x+68

b)

(x+9)²-(x-6)²=x²+18x+81-x²+12x-36=30x+45

c)

(10x+3)²+(x+7)²=100x²+60x+9+x²+14x+49=101x²+74x+58

d)

(x-3)²-(x-15)²=x²-6x+9-x²+30x-225=24x-216

Un alt exercitiu gasesti aici: https://brainly.ro/tema/1023163

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