Question

If A,B are the zeroes of the polynomial f (x) = 4x2 + 3x + 7, the 1/a + 1/b​

Answer 1

4x² + 3x + 7

A and ẞ are the zeroes of the polynomial.

$\fcolorbox{red}{brown}{sum\:of\:the \:zeroes}$

• - cofficient of x/cofficient of x²
• -3/4

$\fcolorbox{red}{yellow}{product\:</p><p>of\:the\:zeroes}$

• constant term/cofficient of x²
• 7/4

$\huge\underline\purple{Solution\::-}$

• 1/a + 1/b
• b + a /ab
• -3/4 ÷ 7/4
• -3/4 × 4/7

$\fcolorbox{red}{green}{-3/7}$

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