Nick is now seven times as old as Harry. In 6 years, Nick will be five times as old as Harry. How old will Harry be i years?
If x represents Harry's age now, then which of the following equations could be used to solve the problem?
7X+6 = 5(x + 6)
517x + 6) = x + 6

- 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

whatvare the choices

step-by-step explanation: