Me on this i hate math and i don't understand bc i have to do this asap

Scholar #2 is correct. You take 15=-3m-18+5m-7 and combie like terms. Which will leave you with 15=2m-25. You will simplify from there, getting 20=m.

15 = -3m - 18 +5m -7

First step is to combine like terms:

15 = 2m - 18 - 7

15 = 2m-25

Add 25 to each side:

40 = 2m

Divide both sides by 2:

m = 40/2

m = 20

Scholar 2 has the correct solution.

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form