pls tell me hw 2 solve
a3 + 8b3 if a + 2b = 5 and ab=-2
=
given:
ab = -2
applying the identity: to the eq (1)
Now ab = -2 so putting we get,
a3 + 8b3 = 125 -(30 *-2)
=185
pls tell me hw 2 solve
a3 + 8b3 if a + 2b = 5 and ab=-2
=
given:
ab = -2
applying the identity: to the eq (1)
Now ab = -2 so putting we get,
a3 + 8b3 = 125 -(30 *-2)
=185