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Class 10 Class 12

Polynomials

The graph of y = p (x) is given below. Find the number of zeroes of p(x).

Solution not provided.
Ans. 3

90 Views

The grapn of y = p(x) is given below. Find the number of zeroes of p(x).

Solution not provided.
Ans. No zero

85 Views

The graph of y = p(x) is given below. Find the number of p(x).

Solution not provided.
Ans. 2

95 Views

If (x + a) is a factor of 2x² + 2ax + 5x + 10, find a.

Let f (x) = 2x² + 2ax + 5x + 10 Since, (x + a) is a factor of f(x).
⇒ f(–a) = 0
⇒ 2(– a)² + 2a.(–a) + 5(–a) +10 = 0

space rightwards double arrow space space space space

2 straight a squared minus 2 straight a squared minus 5 straight a plus 10 equals 0

rightwards double arrow

negative 5 straight a equals negative 10

rightwards double arrow

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Ans.

315 Views

The graph of y = f (x) is given in Fig. How many zeroes are there of f (x)?

The graph of y = f (x) does no cut the x-axis at any point. So, it has no zero.

215 Views