Question

Find the value of expression when x=-1
(a) 2x-3x2+2. (b) 3x-5

Answer 1

Answer:

-9,-8

Step-by-step explanation:

(a) 2(-1)-3(-1)^2+2

= -2(-(-3)^2)+2

= -2-(9)+2

= -9

(b) 3(-1)-5

= -3-5 = -8

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Answer 2

$\huge\underline\mathtt\red{Answer}$

$x = - 1$

$2 {x} - 3 {x}^{2} + 2 \\ 2( - 1) - 3( { - 1)}^{2} + 2 \\ - 2 - 3(1) + 2 \\ - 2 - 3 + 2 \\ - 3$

$3x - 5 \\ 3( - 1) - 5 \\ - 3 - 5 \\ - 8$