Question

Find the value of 4 x square + y square + 25 z square + 4 x y - 10 y z - 20 z x when x is equals to 4 y = 23 and z = 22

Answer 1

Hi mate

the answer is -1545

Answer 2

6241 Make the equation in the simpler form and then use the formula (2x+y-5z) whole square