Question

Calculați:
a) x(x-2)+x(3-x)
b) 3(1-2a)+(3a+1)
c) 3(a²-2a-2)+a(6-3a)
d) (x-3)(x+4)+12-x
e) x²-7x+5-(x-8(x-1)
f) (x+1)(2-x)+(x²-3x+1)(2-3x)-(x-x²+1)(2x+1)
g) (x-5)(x+4)-3x(x-2)+(5x-1)(x-7)

Answer 1

a) xla2 -2x+3x-x la2= x