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Class 10MathematicsPolynomialsGeometrical meaning of the zeroes of a polynomial.ExpertLevel 23
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If (p(x)=x^2-2(b-4)x+(b-4)^2), at which (x)-value will the graph touch the (x)-axis?

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Answer and explanation

Correct answer: (x=b-4)

It is ((x-(b-4))^2), so the repeated zero is (b-4). Tip: a perfect square form shows the zero quickly.

Related tags

Symbolic Perfect SquareTangentZero

Frequently asked questions

What is the correct answer to this question?

(x=b-4)

Why is this the correct answer?

It is ((x-(b-4))^2), so the repeated zero is (b-4). Tip: a perfect square form shows the zero quickly.

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Polynomials. Topic: Geometrical meaning of the zeroes of a polynomial..

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10 more MCQs
  1. 1What does a zero of a polynomial (p(x)) represent geometrically?
  2. 2If the graph of a polynomial cuts the x-axis at x = 3, what is its zero?
  3. 3If a graph cuts the (x)-axis at ((-2,0)) and ((4,0)), what are the zeroes of the polynomial?
  4. 4If the graph of a linear polynomial cuts the (x)-axis only once, how many zeroes will it have?
  5. 5From which point can the zero of a polynomial be directly found?
  6. 6If the graph of a polynomial neither cuts nor touches the (x)-axis, how many real zeroes does it have?
  7. 7If a parabola cuts the (x)-axis at two distinct points, how many zeroes does the quadratic polynomial have?
  8. 8If a parabola only touches the (x)-axis and does not cut it, how many real zeroes does the quadratic polynomial have?
  9. 9If a parabola lies completely above the (x)-axis, how many real zeroes does the quadratic polynomial have?
  10. 10Which points on the graph indicate the zeros (roots) of a polynomial \\(p(x)\\)?
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