Question

Evaluate each of the following

algebraic expressions if x = -1 , y = 2, z = -2​

(i) 2x² - y²

(ii) 2xy² - 3yz + xz²

(iii) x³ + y² + z ÷ 3

(iv) 2x + 3y - 3/2 × z

(v) 5 + 4x³ - 2z² ​

Answer 1

• Answer :1 = 2(-1)^2-(2)^2 2-4= -2