Question

Check whether x=-2 is the solution of x*2 – 3x - 10 = 0 or not.
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Answer 1

Answer:

no it is not the answer x =-2

Answer 2

Explanation:

By substituting x in the equation,

${x}^{2} - 3x - 10 = 0 \\ = > {( - 2)}^{2} - 3( - 2) - 10 = 0\\ = > 4 + 6 - 10 = 0 \\ = > 0 = 0$

Hence RHS = LHS.

Thus as answer is 0, (x - 2) is a solution of the equation.

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