MCQ
Substitute $a = -3$ in $a^2 + 7a + 5$ and figure out it equals how much.
- A$19$
- B$24$
- ✓$-7$
- D$26$
✓
Answer
Correct option: C.
$-7$
B. $-7$
Solution:
Substitute $a = -3$ in $a^2 + 7a + 5$
$\Rightarrow (-3)^2 + 7(-3) +5$
$\Rightarrow 9 - 21 + 5$
$\Rightarrow 9 - 16$
$\Rightarrow -7$
Solution:
Substitute $a = -3$ in $a^2 + 7a + 5$
$\Rightarrow (-3)^2 + 7(-3) +5$
$\Rightarrow 9 - 21 + 5$
$\Rightarrow 9 - 16$
$\Rightarrow -7$
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