State True or False:
$- 7 x^{2} + 18 x^{2} + 3 x^{2} - 5 x^{2}$ is equal to $9 x^{2}$

True

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False

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Solution

The correct option is A True
$W e c a n d i r e c t l y a d d t h e c o e f f i c i e n t s o f l i k e v a r i a b l e s, ⟹ (- 7 + 18 + 3 - 5) x^{2} = 9 x^{2}$

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