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:

Step-by-step explanation:

(i) 2-4=-2

(ii) -8 + 12 - 4 = 0

(iii) -1 + 4 -2 / 3= 1/3

(iv) -2 + 6 - 3/2 X -2 = 4 + 3 = 7

(v) 5 -4 - 8= -7