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Exponents — Maths STD 7 — Question

Maharashtra BoardEnglish MediumSTD 7MathsExponents1 Mark
Question
Find the values of the following:
$(-7)^2$
✓

Answer

We know that If ' $a$ ' is natural number, then
$(- a )^{\text {even number }}=$ positive number
$(- a )^{\text {even number }}=$ negative number
We have,
$(-7)^2=(-7) \times(-7)$
$=49$

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