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Using the distributive property of multiplication over addition, 2*[2 - 2] = 2*[2 + (-2)] = 2*2 + 2*(-2)LHS = 2*0 = 0

RHS = 4 + 2*(-2)

Therefore 2*(-2) = -4 and, by commutativity, -2*2 = -4


Next

-2*[2 - 2] = -2*[2 + (-2)] = -2*2 + -2*(-2)

LHS = -2*0 = 0

RHS = -4 + -2*(-2)

Therefore -2 times -2 = +4

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7y ago
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Q: Why does minus 2 x minus 2 equal 4?
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