Question

MEDAL + FAN FOR RIGHT ANSWER

1. What step is incorrect when solving the expression x2 + 2x -3 when x = -2?
I. -22 + 2* -2 – 3
II. -4 -4 -3
III. -8 -3
IV. -11

Answer 1

a) IV
b) II
c) III
d) I

Answer 2

x^2 + 2x - 3 when x = -2
so we sub in -2 for x
-2^2 + 2(-2) - 3
4^2 - 4 - 3 ----( - 2^2 is the same as -2 * -2 which equals 4, not -4) B. Step 2
16 - 4 - 3
16 - 7
9

Answer 3

B. Step 2

Answer 4

do you understand ? Do you have any questions ?

Answer 5

no i got thank you

Answer 6

YW :)