Question

Tolong di jawabkan. karena besok sudah di kumpul

Answer 1

2a) 5x(8x + 7y)
= 40x² + 35xy
b) (x + y)(2x - 3)
= 2x² - 3x + 2xy - 3y
3) (x² + 5x + 6) / (x + 2)
= (x + 2)(x + 3) / (x + 2)
= x + 3
b) (2x² - x - 10) / (x + 2)
= (2x - 5)(x + 2) / (x + 2)
= 2x - 5
5) f(x) = -2x + 3
f(3) = (-2).3 + 3
= (-6) + 3 = (-3)
f(a) = -2a + 3 = 9
-2a = 9 - 3
-2a = 6
a = -3