Question

Simplify (7g2 – 11g + 9) + (13g2 – 21g – 3)

20g2 – 10g + 6

20g2 – 32g + 6

20g2 – 10g + 12

20g2 – 32g + 12

Answer 1

Hint: Add like terms together

Answer 2

Hero's right. Do that and you should get the correct answer.

Answer 3

is it 20g2 - 10g + 6?

Answer 4

close. You made a mistake however. Can you try to find it?

Answer 5

Try adding it again a second time.

Answer 6

Yeh, it's not -10g try again.

Answer 7

Oh! its 20g2 -32g + 6

Answer 8

Yes.

Answer 9

Thanks for blurting out the error @JayDS

You should give the student a chance to find his/her own mistake.

Answer 10

yeh sorry