Math, asked by sumanshuklas8076, 10 months ago

prove that the value of x2 + y2 + z2 + xy + yz +zx is 43 when x = 4,y = -6 and z = 5.

Answers

Answered by Starboy95

16

4(2)+(-6)2+5(2)+4(-6)+(-6)(5)+(5)(4) 8+(-12)+10+(-24)+(-30)+(20) -28

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