The roots of the quadratic equation 4x2 − 81 =400
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.a true friend is (a)---- asset. He stands by his friend in time of (b)---- danger. Normally he is not (c) ---- greedy person. He always wishes for (d) ---- welfare of his friends . But it is (e) ---- matter of fact that (f) ---- ideal friend is very rare today.
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x= ±√481/2
Step-by-step explanation:
4x2-81=400
4x2=481
x2=481/4
x=±√481/2
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