Question

(x+6)^2=(x+4)^2+(8)^2
^2 significa al cuadrado

Answer 1

$(x+6)^{2}= (x+4)^{2}+8^{2}$

$x^{2} +2(x)(6)+6^{2} = x^{2} +2(x)(4)+4^{2} +8^{2}$

$x^{2} +12x+36=x^{2} +8x+16+64$

$x^{2} +12x -x^{2} -8x=16+64-36$

$4x = 44$

$x = \frac{44}{4}$

$x = 11$

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