Question Number 148746 by mathdanisur last updated on 30/Jul/21

if x - y = y - z = 4 find x^2 + z^2 - 2y^2 = ?

Answered by Rasheed.Sindhi last updated on 30/Jul/21

if x - y = y - z = 4 x^2 + z^2 - 2y^2 = ? _(−) x=y+4 ,z=y−4 x^2 + z^2 - 2y^2 = (y+4)^2 +(y−4)^2 −2y^2 =y^2 +8y+16+y^2 −8y+16−2y^2 =2y^2 +32−2y^2 =32

Commented bymathdanisur last updated on 30/Jul/21

Thank You Ser