Question

which of the following is NOT a solution of 2a^2+3b=5?

a) a=0, b=5/3
b) a=1, b=1
c) a=2, b=-1
d) a=3, b=-4
e) a=4, b=-9

Answer 1

try plugging in the possible choices into the equation..

like this:
a) a=0, b=5/3, so..
2(0)^2+3(5/3)=5
2+5 = 5 [False]

Answer 2

lol... wow

2(0)^2 = 2....

perhaps it should be

2(0)^2 + 3(5/3) = 0 + 5
= 5

true

Answer 3

but the answer is d though D: