obliczy mi ktoś szybko? a) -3x(x²-2)-6x+3x³+3= b) -(3a-4b)+(2a-3b)=c) -2x+3y-5+6x+4-7yd) 2(5x-1)+3(2.... Question from @Nieumiemwmatematyke

June 2022 2 7 Report

obliczy mi ktoś szybko?
a) -3x(x²-2)-6x+3x³+3=
b) -(3a-4b)+(2a-3b)=
c) -2x+3y-5+6x+4-7y
d) 2(5x-1)+3(2x+1)=
e) (5x-2)(3x+3)=

Odpowiedź:

$- 3x( {x}^{2} - 2) - 6x + 3 {x}^{3} + 3 = - 3 {x}^{3} + 6x - 6x + 3 {x}^{3} + 3 = 3$

Szczegółowe wyjaśnienie:

$- (3a - 4b) + (2a - 3b) = - 3a + 4b + 2a - 3b = - a - b$

$- 2x + 3y - 5 + 6x + 4 - 7y = 4x - 4y - 1$

$2(5x - 1) + 3(2x + 1) = 10x - 2 + 6x + 3 = 16x + 1$

$(5x - 2)(3x + 3) = 15 {x}^{2} + 15x - 6x - 6 = 15 {x}^{2} + 11x - 6$

1 votes Thanks 1

Iga09

a) -3x(x²-2)-6x+3x³+3=-3x³+6x-6x+3x³+3=3

b) -(3a-4b)+(2a-3b)=-3a+4b+2a-3b=-a+b

c) -2x+3y-5+6x+4-7y=4x-4y-1

d) 2(5x-1)+3(2x+1)=10x-2+6x+3=16x+1

e) (5x-2)(3x+3)=15x²+15x-6x-6=15x²+9x-6

2 votes Thanks 1

" Life is not a problem to be solved but a reality to be experienced! "