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Alik [6]
1 year ago
10

If the quadratic formula is used to find

Mathematics
1 answer:
Anuta_ua [19.1K]1 year ago
5 0

The two roots obtained for the quadratic equation by quadratic formula are 1.5 and 4.

<h3>What is defined as the quadratic formula?</h3>
  • A quadratic equation is just a polynomial with a second degree first term.
  • There are several methods for determining the roots, or solutions, of such a quadratic equation.
  • Every quadratic equation has two solutions, that might or might not be real numbers.
  • The quadratic formula is a simple method for resolving a quadratic equation. whether the answer is a whole number, an irrational number, or perhaps an imaginary number

If the quadratic equation is ax² + bx + c = 0.

Then, the roots are given by x = [-b ± √(b² - 4ac)]/2a.

The quadratic equation is given as; 2x² - 5x - 12 = 0.

On comparing with the standard form;

  • a = 2
  • b = -5
  • c = -12

Put the values in the formula,

x = [-b ± √(b² - 4ac)]/2a.

x = [-(-5) ± √((-5)² - 4×2×(-12))] / 2×2

On simplification,

x = [5 ± 11]/4

There will be two roots of equation,

a; x =  [5 + 11]/4

x = 16/4 = 4

b ; x = [5 - 11]/4

x = 6/4 = 1.5

Thus, the two roots obtained for the quadratic equation by quadratic formula are 1.5 and 4.

To know more about the quadratic formula, here

brainly.com/question/1214333

#SPJ13

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