Question

Evaluate the expression for the given value.

x = 3; y = -5; z = -2

x(yz)^2 - 3(xyz)^0 + 2x^2yz^2 =

3(-5 * -2)^2 - 3(3 * -5 * -2)^0 + 2(3)^2(-5 * -2)^2 =

3 * 100 - 3 * 30 + 2 * 9

300 - 90 + 18 = 228

Answer 1

Nope. I get

3(-5 * -2)^2 - 3(3 * -5 * -2)^0 + 2(3)^2(-5)(-2)^2
= 3(100) - 3 - 18*5*4
= 300-3-360
= -63

Answer 2

Evaluate the expression -4x3y given that x = 2 and y = -7