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
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 \( \boxed{18} \).
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 \( \boxed{18} \).