Question

Resuelve los siguientes ejercicios planteados
a) (a + b + 1)*(a + b - 10)

b) (x3 – 8y2)*(x3+y2)

c) (x3-8y)*(x3+y2)

d) (a2 – 5a + 6)*(a2 + 5a - 6)

Answer 1

(a + b + 1)*(a + b - 10)
[ (a + b) + 1) ] [ (a + b) - 10) ]
(a+b)^2 -10(a+b) + (a+b) - 10
a^2 +2ab+ b^2 -10a - 10b +a+b -10
a^2 + 2ab + b^2 - 9a -9b - 10


(x3 – 8y2)*(x3+y2)
x^6 +x^3y^2 - 8y^2x^3 - 8y^4
x^6 -7x^3y^2 - 8y^4


(x3-8y)*(x3+y2)
x^6+ x^3y^2 - 8yx^3 - 8y^3