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3 years ago

A polynomial that has a degree of 2 is called ___.

Mathematics

2 answers:

kati45 [8]3 years ago

7 0

Answer:

A polynomial that has a degree of 2 is called quadratic polynomial.

Step-by-step explanation:

Given : A polynomial that has a degree of 2 is called ___.

To find : Polynomial.

Solution : We have given A polynomial that has a degree of 2.

Quadratic polynomial : A polynomial which has 2 degree.

Example : ax²+bx +c =0.

Then we can say the polynomial which has 2 degree is called quadratic polynomial.

Therefore, A polynomial that has a degree of 2 is called quadratic polynomial.

kupik [55]3 years ago

6 0

A polynomial that has a degree of 2 is quadratic.

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madreJ [45]

Answer:

$x = 3 + 4\sqrt{3}$

Step-by-step explanation:

OPQ is a right angle triangle.

Using Pythagoras

$x^{2} + (x+5)^{2} = (x+8)^{2}\\x^{2} + x^{2} + 10x +25 = x^{2} + 16x + 64\\x^{2} + x^{2} - x^{2} + 10x - 16x + 25 - 64 = 0\\x^{2} - 6x -39 = 0$

Using quadratic formula

$x = \frac{-b \± \sqrt{b^{2}-4ac}}{2a}\\x = \frac{-(-6) \± \sqrt{(-6)^{2}-4(1)(-39)}}{2(1)}\\x = \frac{6}{2} \± \frac{\sqrt{192}}{2}\\x = 3 \± \frac{8\sqrt{3}}{2}\\x = 3 \± 4\sqrt{3}$

$x = 3 + 4\sqrt{3} = 9.928(4s.f.)$

$x = 3 - 4\sqrt{3} = -3.928(4s.f.)$ (Length can't be negative)

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