Question

Verify that a =(b+c)(a + b)+(a + c) for each of the following values of a, b and c
(a) a = 12, b= - 4, c = 2
(b)) a =(-10), b = 1, c = 1​

Answer 1

(a) a =(b+c)(a + b)+(a + c)

12= (-4+2)(12-4)+(12+2)

12= -2×8 + 14

12= -16 +14

12 not equal to -2 not verified

(b) a =(b+c)(a + b)+(a + c)

-10=(1+1)(-10+1)+(-10+1)

-10= 2×-9+ (-9)

-10= -18 -9

10 is not equal to -27 not verified