3 years ago

type the correct answer in each box. Use numerald instead of words. If necessary, use/ for the fraction bar

1 answer:

7 0

Answer:

I just really don't kniwwww

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Stels [109]

Factorize the quadratic trinomial $x^2 - 9x + 14$ by the rule:

$ax^2+bx+c=a(x-x_1)(x-x_2), \text{ where } x_1,\ x_2 \text{ are its roots. }$

1. Find the roots:

$D=(-9)^2-4\cdot 14=81-56=25,\ \sqrt{D}=5,\\ \\ x_1=\dfrac{9-5}{2}=2,\ x_2=\dfrac{9+5}{2}=7.$

2. Factorize the polynomial:

$x^2 - 9x + 14=(x-2)(x-7).$

3. Only factor x-2 is given in options, then the correct choice is B.

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3 years ago

harkovskaia [24]

The answer is C 210 pi cm^3. Hope this helps

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3 years ago

kolbaska11 [484]

It’s 20 I believe. All together it should be 160 so you add 118 and 22 to get 140. Then subtract that from 160 and you get 20.

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3 years ago

svetlana [45]

what are you asking?

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3 years ago

Bas_tet [7]

Answer: domain: (-oo,oo) range: (0,oo)

Step-by-step explanation:

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3 years ago

type the correct answer in each box. Use numerald instead of words. If necessary, use/ for the fraction bar​