Question

因式分解,5x^2+6xy-8y^2 x^2+(a+2)x+(a+1)

Answer 1

5x^2+6xy-8y^2

5x -4y

1x 2y

----------------------------

-4xy + 10xy =6xy

原式=(5x-4y)(x+2)

x^2+(a+2)x+(a+1)

x a+1

x 1

----------------

(a+1)x + x =(a+2)x

原式=(x+a+1)(x+1)