Question

Calculați:
a)5•(x-3)-4x•(2x+3)
b)3x•(4x-3)-2•(5-7x)=
c)4•(3x-4)-7x•(2x+3)=
d)√6•(2√3x²-5√2x+2√2)-2√3x•(5√3x²+8√2x+2)=
e)5√2•(2√6x+3√2)•(3√2x²+2√3x+√6)=
{P.s. mulțumesc)}​

Answer 1

Explicație pas cu pas:

a) 5(x-3)-4x(2x+3)=5x-15-8x^2-12x=8x^2-7x-15

b) 3x(4x-3)-2(5-7x)=12x^2-9x-10+14x=12x^2+5x-10

c) 4(3x-4)-7x(2x+3)=12x-16-14x^2-21=14x^2+12x-37