Question

answer this plz
$4 {x}^{2} - 5 \: when \: x = 3$
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Answer 1

If x=3 then we’ll put the value of x then it’ll be

=4(3)^2-5
=4(9)-5
=36-5
=31 {ans.}

Answer 2

By putting value x=3 in 4x^2 -5
=4(3)^2 -5
=(3)^2=9
So put value
=4(9)-5
=36-5
= 31 Ans.