Expand (x + 8)(x + 10)
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Given,
⇒ (x + 8)(x + 10)
Expanding,
⇒ x2 + 10x + 8x + 80
⇒ x2 + 18x + 80.
Hence, expansion of (x + 8)(x + 10) = x2 + 18x + 80.
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If a + b - c = 4 and a2 + b2 + c2 = 14, the value of ab - bc - ca is :
2
1
0.5
-0.5
Expand (x + 8)(x - 10)
Expand (x - 8)(x + 10)