Question

Consider each expression. if x = -2, is the value of the expression

a positive number? Select Yes or No.
A. -2(x - 2)
Yes
No
B. –3x(5 – 4x)
Yes
No
C. x + 6x
O Yes O No

Answer 1

Yes

Yes

No

Explanation:

Given value x = -2;

Problem, is the expression a positive number ?

A. -2(x - 2)

if x = -2

-2(-2 - 2)

= -2 (-4)

= 8

Yes

B. -3x(5 - 4x)

if x = -2

-3 x -2(5 - 4(-2))

= 6 (5 + 8)

= 6 x 13

= 78

Yes

C. x + 6x

if x = -2

-2 + 6(-2)

= -2 - 12

= - 14

No