Question

(16x5 + 2x^)(3x2 + 2x)

a) 17x + 12x6 + 5x5 + 4x3
b) 18x' + 12x8 + 6x6 + 4x7
c) 14x + 12x + 6x5 + 4x
d) 12x8 + 22x? + 6x5
e) 12x + 21x? +6x5
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Answer 1

Multiplicación de binomios:

Ejercicio 1

(16x^5 + 2x^4)(3x^2 + 2x^3)

$(16x^5+2x^4)(3x^2+2x^3)=\\\\48x^7+32x^8+6x^6+4x^7=\\\\32x^8+48x^7+4x^7+6x^6=\\\\32x^8+52x^7+6x^6=$

Ecuación

Ejercicio 1

x/12 = 8/15   Despejar x

$\frac{x}{12} =\frac{8}{15}\\\\x=\frac{8\cdot12}{15} \\\\x=\frac{96}{15}\\\\x=\frac{32}{5}\ ;\ x= 6,4\\\\Comprobacion\\ \frac{\frac{32}{5} }{12} =\frac{8}{15}\\\\\frac{32}{60} =\frac{8}{15}\\\\_{simplificar}\\\frac{8}{15} =\frac{8}{15}$