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Question

any $increment A B C comma$ the value of $a open parentheses b to the power of 2 end exponent plus c to the power of 2 end exponent close parentheses cos invisible function application A plus b left parenthesis c to the power of 2 end exponent plus a to the power of 2 end exponent right parenthesis cos invisible function application B plus c left parenthesis a to the power of 2 end exponent plus b to the power of 2 end exponent right parenthesis cos invisible function application C equals$

$3 a b c^{2}$
$3 a^{2} b c$
$3 a b c$
$3 a b^{2} c$

The correct answer is: $3 a b c$

We have,
$a open parentheses b to the power of 2 end exponent plus c to the power of 2 end exponent close parentheses cos invisible function application A plus b open parentheses c to the power of 2 end exponent plus a to the power of 2 end exponent close parentheses cos invisible function application B plus c open parentheses a to the power of 2 end exponent plus b to the power of 2 end exponent close parentheses cos invisible function application C$
$equals a b open parentheses b cos invisible function application A plus a cos invisible function application B close parentheses plus b c open parentheses c cos invisible function application B plus b cos invisible function application C close parentheses plus c a left parenthesis c cos invisible function application A plus a cos invisible function application C right parenthesis$
$equals a b c plus a b c plus a b c equals 3 a b c$

Related Questions to study

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