Prove that
1. + − − + = +
2. + − − + = +
3. (+ − + + ) = − +
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As +*- is -
-*- is +
+*+ is +
So number one's answer is +
Like this you can prove other two questions.
Hope it helps you friend✌
-*- is +
+*+ is +
So number one's answer is +
Like this you can prove other two questions.
Hope it helps you friend✌
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