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LenaWriter [7]
2 years ago
10

I'm having trouble solving this, if anyone could help I'd be most appreciated.

Mathematics
1 answer:
STALIN [3.7K]2 years ago
5 0
You can check that
f(1)=0
f(-3)=0
f(-5)=0

thus:
x^3+7x^2+7x-15=\boxed{(x-1)(x+3)(x+5)}

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Do someone one want to help me with this ?
Annette [7]

Answer:

The equation is 4y+8=9

The expression is 3-2

The inequality is 7/y < 6

Step-by-step explanation:

7 0
2 years ago
Subtract - 2x - 10 from 10x2 + 3.
krok68 [10]

Answer:

10x2 + 2x + 13.

Step-by-step explanation:

10x2 + 3  - (-2x - 10)      (Note you have to put the -2x - 10 in brackets).

= 10x2 + 3 + 2x + 10      (Distributing the negative over the brackets).

= 10x2 + 2x + 13.

8 0
3 years ago
Un padre tiene actualmente cuatro veces la edad de su hijo. Cuando pasen 5 años, su edad será solo tres veces superior. ¿Qué eda
julsineya [31]

Answer:

I. Hijo, h = 10 años

II. Padre, P = 40 años

Step-by-step explanation:

  • Sea la edad del padre P.
  • Sea la edad del hijo h.

Traduciendo el problema verbal a una expresión algebraica, tenemos;

P = 4h .....ecuación 1.

P + 5 = 3(h + 5) ........ecuación 2.

Simplificando aún más, tenemos;

P + 5 = 3h + 15

P = 3h + 15 - 5

F = 3h + 10 ......ecuación 3.

Sustituyendo la ecuación 1 en la ecuación 3;

4h = 3h + 10

4h - 3h = 10

<em>h = 10 años </em>

A continuación, encontraríamos la edad del padre;

P = 4h

P = 4 * 10

<em>P = 40 años</em>

4 0
2 years ago
Simplify: (sin θ − cos θ)^2 − (sin θ + cos θ)^2 A) −4sin(θ)cos(θ) B) 2 C) sin^2 θ D) cos^2 θ
N76 [4]

Answer:

-4sinθcosθ

Step-by-step explanation:

Note:

1. (a + b)^2 = a^2 + 2ab + b^2

2. (a - b)^2 = a^2 - 2ab + b^2

3. sin^2θ + cos^2θ = 1

(sinθ -cosθ)^2 - (sinθ + cosθ)^2

= sin^2θ - 2sinθcosθ + cos^2θ - (sin^2θ + 2sinθcosθ + cos^2θ)

= sin^2θ + cos^2θ - 2sinθcosθ - (sin^2θ + cos^2θ + 2sinθcosθ)

= 1 - 2sinθcosθ - (1 + 2sinθcosθ)

= 1- 2sinθcosθ -1 - 2sinθcosθ

= - 2sinθcosθ - 2sinθcosθ

= -4sinθcosθ

3 0
3 years ago
Write and solve a proportion to answer the question.
Reptile [31]

Answer:

48

Step-by-step explanation:

p/100×25=12

p/4=12

(p/4)×4=12×4

p=48

I hope this makes sense

8 0
3 years ago
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