Question

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Answer 1

hey @Loser66

Answer 2

replace x =-3 into the expression, what do you get?

Answer 3

@Loser66 i still dont understand.

Answer 4

No need to understand, just calculate it for me, please.

Answer 5

you will get the logic after doing that.

Answer 6

so -3 times 3 is -9
-3^2 is 9 times 7 is 63

Answer 7

wait no -7 so -63

Answer 8

hey, x3 means \(x^3\)

Answer 9

it is not x*3

Answer 10

so confused. could you do the first few steps to get me started?

Answer 11

is this long or synthetic division ?

Answer 12

long i believe

Answer 13

no need to take long division!! \((-3)^3-7(-3)^2-18(-3)+42=-24\) hence 24 is the remainder of the expression divided by (x+3)
If you don't trust me, take long division, the answer will be the same.

Answer 14

Thank you so much!

Answer 15

WAIT UP

Answer 16

@Loser66 should you use synthetic division the answer would be 6
its divide not substitute

Answer 17

@Loser66 yamyam says 6 you say 24?