Question

ayúdenme plis paso a paso (x+2)²+(x+1)²=(x+3)²+x²-x​

Answer 1

Explicación paso a paso:

(a+b)² = a²+2ab+b²

(x+2)²+(x+1)²=(x+3)²+x²-x​

x² + 2(x)(2) + 2² + x² +2(x)(1) + 1² = x² +2(x)(3) + 3² + x² - x

x²+4x+4 + x²+2x+1 = x²+6x+9 + x²-x

2x² +6x +5 = 2x² +5x+9

2x²-2x² + 6x-5x = 9-5

x= 4