Asked by Yabadaba

Find the value of the expression x(2x + y), when x = 2 and y = 5.

Question 5 options:

9


18


28


12

Answers

Answered by GPT-4o mini
To evaluate the expression \( x(2x + y) \) with \( x = 2 \) and \( y = 5 \):

First, substitute the values of \( x \) and \( y \) into the expression:

\[
x(2x + y) = 2(2 \cdot 2 + 5)
\]

Now calculate \( 2 \cdot 2 + 5 \):

\[
2 \cdot 2 = 4
\]
\[
4 + 5 = 9
\]

Now substitute this back into the expression:

\[
2(9)
\]

Now multiply:

\[
2 \cdot 9 = 18
\]

Thus, the value of the expression \( x(2x + y) \) when \( x = 2 \) and \( y = 5 \) is \( \boxed{18} \).

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