Question

1. Simplify the following expressions and evaluate:
a) a(2a^2- a+2) for a = -1
b) 2x (3x - 5) - 3(x - 3) for x = 2

Answer 1

Answer:

Answer: a. -5

b. 7

b. 7explanation:

b. 7explanation: A. a(2a^2 - a+2 )

b. 7explanation: A. a(2a^2 - a+2 )= -1( 2×(-1^2) - (-1)+2)

b. 7explanation: A. a(2a^2 - a+2 )= -1( 2×(-1^2) - (-1)+2)= -1( 2×1 +1+2 )

b. 7explanation: A. a(2a^2 - a+2 )= -1( 2×(-1^2) - (-1)+2)= -1( 2×1 +1+2 )= -1( 5 )

b. 7explanation: A. a(2a^2 - a+2 )= -1( 2×(-1^2) - (-1)+2)= -1( 2×1 +1+2 )= -1( 5 )= -5