Question

(0.4x+0.7=0.3x)x 10 solucion y comprobacion porfa

Answer 1

Respuesta:

$\mathrm{Expandir}\:\left(0.4x+0.7=0.3x\right)x^{10}:\quad 0.4x^{11}+0.7x^{10}=0.3x$

Explicación paso a paso:

$\left(0.4x+0.7=0.3x\right)x^{10}\\ =x^{10}\left(0.4x+0.7\cdot \:0.3=x\right)\\ \mathrm{Poner\:los\:parentesis\:utilizando}:\quad \:a\left(b+c\right)=ab+ac\\ a=x^{10},\:b=0.4x,\:c=0.7=0.3x\\ x^{10}\cdot \:0.4x+x^{10}\cdot \:0.7=0.3x\\ 0.4x^{10}x+0.7x^{10}=0.3x\\ expandir 0.4x^{10}x+0.7x^{10}=0.4x^{11}+0.7x^{10}\\ 0.4x^{11}+0.7x^{10}=0.3x$

saludos