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Paraphin [41]
2 years ago
14

Can someone help me with this

Mathematics
1 answer:
antiseptic1488 [7]2 years ago
4 0

Answer:

[9 - 2 = 7 x 4] = {28}

[ ] =expression { } answer

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What is the sum of the roots of the polynomial shown below?<br> f(x) = x^3 + 2x^2 - 11x-12
svp [43]

<u>Answer:  </u>

Sum of the roots of the polynomial x^{3}+2 x^{2}-11 x-12 \text { is }-2

<u>Solution:</u>

The general form of cubic polynomial is a x^{3}+b x^{2}+c x+d=0 ---- (1)

If we have any cubic polynomial a x^{3}+b x^{2}+c x+d=0 having roots \alpha , \beta , \theta

Sum of roots \alpha + \beta + \theta = \frac{-b}{a} ---(2)

From question given that,

x^{3}+2 x^{2}-11 x-12 --- (3)

On comparing equation (1) and (3), we get a = 1, b = 2, c = -11 and d = -12

Hence the sum of roots using eqn 2 is given as,

= \frac{-2}{1}

= -2

Hence the sum of the roots of the polynomial x^{3}+2 x^{2}-11 x-12 \text { is }-2

4 0
2 years ago
Help please will give the brainliest
Mice21 [21]

Answer:

Every angle of Square = 90°

diagonal bisects the angle in half.

=> angle FGI = 45°

=> 7x+3=45

=>7x=42

therefore, x=42/7=6

5 0
3 years ago
Read 2 more answers
Are these ratios equivalent?
zhenek [66]
No because 5/2= 2,5 however 63/19=3,66...
7 0
2 years ago
Estimate the difference by rounding each number to the nearest half or whole.<br><br> 7 1/15 - 3 4/5
bearhunter [10]
7 1/15 to the nearest whole would be 7. 3 4/5 to the nearest whole would be 4.

7 – 4 = 3
3 0
3 years ago
Halla las dimensiones de un rectángulo de 48 cm2 de área sabiendo que es 2 cm<br> más ancho que alto
Sloan [31]

Answer:Alto 16cm Ancho 32cm

A+2A=48

3A=48

/3

A=16

Step-by-step explanation:

7 0
2 years ago
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