Question

Select the correct difference.

5d2 + 4d - 3 less 2d2 - 3d + 4
I need someone to explain this to me step by step and don't just give me the answer

Answer 1

@myko will u please help me

Answer 2

just add/rest terms that are alike (terms with same power of d). Got it?

Answer 3

which terms have d^2 besides them?

Answer 4

do u get it

Answer 5

what srry don't understand wat u r asking

Answer 6

Ok. Maybe this way then.
Write what you need first. You need the difference, so:
(5d2 + 4d - 3 )-(2d2 - 3d + 4) = 5d2+4d-3-2d2+3d-4
now, group the temrs with same power of d. There are 3 different powers: d^2, d and none. So:
(5d2-2d2)+(4d+3d)+(-3-4)
now take out the commun term outside of each paréntesis:
(5-2)d2 +(4+3)d+(-3-4)
and just perform the operations inside the paréntesis:
3d2+7d-7

Answer 7

thank u so much I get how to do it now @myko