Question

A Function is defined as K(x)= 2x^2 -5x +3.The value of K(-3) is

Answer 1

Given that $K(x)= 2x^2 -5x +3$ as a function, the value of K(-3) can be found by substituting x for -3 into the function which will give us: $\mathbf{K(-3) = 36}$

Given the function, $K(x)= 2x^2 -5x +3$, to find the value of K(-3), substitute -3 for x into  $K(x)= 2x^2 -5x +3$.

• Thus, substitute:

$K(-3)= 2(-3)^2 -5(-3) +3\\\\K(-3) = 18 + 15 + 3\\\\\mathbf{K(-3) = 36}$

Therefore, given that $K(x)= 2x^2 -5x +3$ as a function, the value of K(-3) can be found by substituting x for -3 into the function which will give us: $\mathbf{K(-3) = 36}$

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