Question
Simplify: $9 \times (-16) + (-17) \times (-16)$
✓
Answer
$9 \times (-16) + (-17) \times (-16)$
$= -(9 \times 16) + (17 \times 16)$
$= -144 + 272 = 272 - 144 = 128$
Hence, $9 \times (-16) + (-17) \times (-16) = 128$
$= -(9 \times 16) + (17 \times 16)$
$= -144 + 272 = 272 - 144 = 128$
Hence, $9 \times (-16) + (-17) \times (-16) = 128$
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