Question

If x=3 and y=5, work out the value of
a) 4 x-2 y
b) 2x^2+3y^2

Answer 1

The answer is a)2 and b)93

Explanation:

we know that, x=3 and y=5

now, as per the question,

a) 4x-2y

=4(3)-2(5)

=12-10

=2

b) 2x^+3y^

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

=2*9+3*25

=18+75

=93

therefore, a)2 and b)93