Question

Cálculo (3×+4)(2×+5y)3× ?

Answer 1

(3x+4)(2x+5y)(3x) = (9x²+12x)(2x+5y) = 18x³+45x²y+24x²+60xy

(3x+4)(3x) = (3x·3x+4·3x) = (9x²+12x)
(9x²+12x)(2x+5y) = (9x²·2x+9x²·5y+12x·2x+12x·5y) 
(9x²·2x+9x²·5y+12x·2x+12x·5y) = (18x³+45x²y+24x²+60xy)

Answer 2

(3x + 4) * (2x + y) 3x
(6x² + 3xy + 8x + 4y ) 3x
18 x³ + 9 x²y + 24 x² + 12xy  podemos simplificar por 3
6x³ + 3x²y + 8x² + 4 xy
x(6 x² + 3 x y + 8 x + 4y)


espero ter ajudado