2
a) -5x² + 4x + 6x² −7+ x² + 5x =
X +
b) -2 (-2a + 3b) - 3a(-4+3a − 5b) = [
a +
b
X +
a +
ab +
c) (-3+x) (-2x+3) - 5 = ¯x² + x + ¯
d) (5-2x) (-2x-3)-3x (3x+1)=x²+x+
a) -5x² + 4x + 6x² −7+ x² + 5x =
X +
b) -2 (-2a + 3b) - 3a(-4+3a − 5b) = [
a +
b
X +
a +
ab +
c) (-3+x) (-2x+3) - 5 = ¯x² + x + ¯
d) (5-2x) (-2x-3)-3x (3x+1)=x²+x+
Verified answer
a) = 2x² + 9x - 7
b) = -9a² + 15ab + 16a - 6b
c) = -2x² + 9x - 14
d) = -5x² - 7x - 15
b) 4a -6b + 12a -9a^2 + 15ab = 15ab -9a^2 +16a -6b
c) 6x - 9 -2x^2 +3x -5 = -2x^2 + 9x -14
d) -10x -15 + 4x^2 + 6x -9x^2 -3x = -5x^2 -7x -15