Verified Answer :

dalendrk

\(7x^2+10x^2=17x^2\\\\if\ not\ sume\ only\ difference\\\\7x^2-10x^2=-3x^2\)

Answer:  The required answer is 3x².

Step-by-step explanation:  We are given that the sum of an expression E and 7x² is 10x².

We are to find the value of the expression E.

According to the given information, we have

\(E+7x^2=10x^2\\\\\Rightarrow E=10x^2-7x^2\\\\\Rightarrow E=(10-7)x^2\\\\\Rightarrow E=3x^2.\)

Thus, the required answer is 3x².

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