Question
 If f(x) = 3x² − 7x + 5, find f(2a) −
4f(a).Solution
ATQ,
f(2a) = 3(4a²) − 14a + 5 = 12a² − 14a + 5 f(a) = 3a² − 7a + 5 f(2a) − 4f(a) = (12a² − 14a + 5) − (12a² − 28a + 20) = 14a − 15
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