Question

Fan + Medal

1) -4x + 6x^2 + 5x
A. 7x^3
B. 6x^2 + 9x
C. 6x^2 - 9x
D. 6x^2 + x

2) a^2 + 5a - 3a^2
A. 5a + 2a^2
B. 5a - 2a^2
C. 2a^2 + 5a
D. 5a - 3a^2

Please help! Thanks so much! :)

Answer 1

a) what is \(5x-4x\)?

Answer 2

1=a

Answer 3

oh no!

Answer 4

1=D my bad and 2=C

Answer 5

what is this wrong answer day?

Answer 6

It's C. Confirm it.

Answer 7

@CielBleu beware of answers without explanation
they are frequently incorrect and don't help you anyway

Answer 8

you want to guess or to do it?

Answer 9

Ok. Thanks for the warning. @satellite73
Could you help me? I am confused.

Answer 10

ok lets look at the first one

Answer 11

\[ -4x + 6x^2 + 5x\] and you want to combine like terms
the like terms are the ones with the same variable and the same exponent too

Answer 12

Ok, I understand what you are saying.

Answer 13

\[\color\magenta{-4x} + 6x^2 \color\magenta{+ 5x}\]

Answer 14

now the only question is, what is \(5x-4x\)?

Answer 15

do you know it?

Answer 16

x right

Answer 17

or 1?

Answer 18

\(x\) is correct

Answer 19

just like 5 apples minus 4 apples is 1 apple, not the number 1

Answer 20

final answer is therefore
\[6x^2+x\]

Answer 21

Thanks so much :)