If 10x−8y=2 and −7x−y=5 are true equations, what would be the value of−17x+7y?

  2.951

x = -0.576

y = -0.97

-17x + 7y

= -17(-0.573) + 7(-0.97)

= 2.951

- 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

597

step-by-step explanation: