Question

Efetue
a)(7x²-6x)+(-2x²+1)
b)(3x+4)-(6x-1)
c)-3x².(-2x³-y)
d)(-18x³ y3):(-6xy)

Answer 1

(7x² - 6x) + (-2x² + 1)

7x² - 6x - 2x² + 1

5x² - 6x + 1

(3x + 4) - (6x - 1)

3x + 4 - 6x + 1

- 3x + 5

- 3x² . (-2x³ - y)

- 3x² . - 2x³ - y

- 6x⁵ - y

Answer 2

a) 7x²-6x-2x²+1= 5x²-6x+1
b) 3x+4-6x+1 = -3x+5
c) 6x*5 +3x²y
d) 3x²y²