Solve for aa. Express your answer as an integer or integers or in simplest radical form.minus, 21, equals, minus, 3, minus, 2, a, squared−21=−3−2a 2
Question
Solve for aa. Express your answer as an integer or integers or in simplest radical form.minus, 21, equals, minus, 3, minus, 2, a, squared−21=−3−2a 2
Solution
The equation is -21 = -3 - 2a^2.
Step 1: Add 3 to both sides to isolate the term with the variable. This gives us -18 = -2a^2.
Step 2: Divide both sides by -2 to solve for a^2. This gives us a^2 = 9.
Step 3: Take the square root of both sides to solve for a. This gives us a = 3 and a = -3.
So, the solutions are a = 3 and a = -3.
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