Given: 7 ndash; 4x ndash; x2 = 0 On multiplying both sides by ndash;1, we get: ndash;(7 ndash; 4x ndash; x2) = 0 #8658; nbsp; ndash;7 ...

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Formula for Sum of n Terms of an AP

7-4 x-x2=0

Question

7 – 4x – x² = 0

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Solution

Given: 7 – 4x – x² = 0
On multiplying both sides by –1, we get:
–(7 – 4x – x²) = 0
$\Rightarrow$ –7 + 4x + x² = 0
$\Rightarrow$ x² + 4x – 7 = 0
Thus, the standard form of the given quadratic equation is x² + 4x – 7 = 0.

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