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Solve the following equations by inspection. There are two real solutions. Enter the lesser number first.
(1 point)
1) x2=36
The solutions are:
and
2) x2=81
The solutions are:
and
3) x2=4
The solutions are:
and
4) x2=49
The solutions are:
and
5) x2=25
The solutions are:
and
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1 answer
To solve the equations by inspection, we find the square roots of each number. Remember that each equation \(x^2 = a\) has two solutions: \(\sqrt{a}\) and \(-\sqrt{a}\).
\(x^2 = 36\)
The solutions are: -6 and 6
\(x^2 = 81\)
The solutions are: -9 and 9
\(x^2 = 4\)
The solutions are: -2 and 2
\(x^2 = 49\)
The solutions are: -7 and 7
\(x^2 = 25\)
The solutions are: -5 and 5
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