Formula

Multiply two numbers

Answer

$-4 \times -1$

$4$

Multiply two numbers

$\color{#FF6800}{ - } 4 \times \left ( \color{#FF6800}{ - } 1 \right )$

$ $ Since negative numbers are multiplied by an even number, remove the (-) sign $ $

$4 \times 1$

$4 \color{#FF6800}{ \times } \color{#FF6800}{ 1 }$

$ $ Multiplying any number by 1 does not change the value $ $

$4$

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