Question

if a=6,b=3, and c=7, the value of 2a2+3b2-7c2 is ____________​

Answer 1

Answer:

a = 6

b = 3

c = 7

then 2a2 + 3b 2 - 7c2 =

(2 x 6 x 2 )+ (3 x 3 x 2 )-( 7 x 7 x 2 )

24 + 18 - 98

42 - 98

-56

Hope it helps !