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3 years ago

8

I don’t understand how to factor trinomials

2 answers:

noname [10]3 years ago

5 0

3. (X-8)(x+3)
6. (X-4)(x+2)
I don't know if the symbol are correct but I know that the numbers are. I hope this can help you

gayaneshka [121]3 years ago

3 0

When the X term is one, and doesn't have a leading coefficient, then you can factor it using the box and diamond method. look up videos on Khan Academy of the box and diamond method for solving trinomials. For number 9, you have a difference of squares. That means you can factor to just 2 terms. (x+4)(x-4) this works because 16 has an easy square root, and the sign in between is a negative(difference)

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marin [14]

<h2>Answer:</h2>

The quadratic function are:

option: A A) y(y + 4) - y = 6

Option: C C.) 4b(b) = 0

<h2>Step-by-step explanation:</h2>

We know that the general equation of a quadratic equation in terms of a variable x is given by:

$ax^2+bx+c=0$

A)

y(y + 4) - y = 6

On simplifying the terms we have:

$y^2+4y-y=6\\\\y^2+3y-6=0$

Hence, option: A is correct.

B)

(3x + 2) + (6x - 1) = 0

$(3x + 2) + (6x - 1) = 0\\\\i.e.\\\\3x+2+6x-1=0\\\\i.e.\\\\3x+6x+2-1=0\\\\i.e.\\\\9x+1=0$

Hence, it is a linear equation.

Hence, option: B is incorrect.

C)

4b(b) = 0

it could also be written as:

$4b^2=0$

Hence, it is a quadratic equation.

Hence, option: C is correct.

D)

3a - 7 = 2(7a - 3)

$3a-7 = 2(7a-3)\\\\i.e.\\\\3a-7=14a-6\\\\\\i.e.\\\\14a-6-3a+7=0\\\\i.e.\\\\14a-3a-6+7=0\\\\i.e.\\\\11a+1=0$

which is again a linear equation.

Hence, option: D is incorrect.

6 0

4 years ago

Kay buys 12 pounds of apples.Each pound costs $20 bills. How much will change should she receive

sleet_krkn [62]

You haven't given us enough information. Does each apple cost $20? If so, how much does she give the apple farmer

4 0

4 years ago

Read 2 more answers

If 3+3 is 6 and 6 + 6 is 12... whats 500x - y

Illusion [34]

500x-y?
Well what x or y, you need that do this problem. But if not then it could be just 500- xy

6 0

3 years ago

Read 2 more answers

Use the given diagram to answer the question.

Mashcka [7]

Where is the diagram?

4 0

3 years ago

Read 2 more answers

Las edades de Luisa y Maria suman 20 años. Dentro de 15 años, la edad de Maria será dos tercios de la de Luisa. ¿Cuales son sus

Setler79 [48]

Answer:

La edad de Luisa es 15 años

La edad de María es 5 años

Step-by-step explanation:

que la edad de María sea x

ii) deja que la edad de Luisa sea

iii) Se da que x + y = 20.

iv) después de 15 años, la edad de María será 2/3 de la de Luisa.

Por lo tanto, podemos decir que x + 15 = 2/3 (y + 15)

Por lo tanto, 3x + 45 = 2y + 30

Por lo tanto 2y - 3x = 15

v) Si multiplicamos la ecuación en iii) por 3 obtenemos 3x + 3y = 60

vi) si sumamos la ecuación en v) a la ecuación en iv) obtenemos 5y = 75.

vii) Por lo tanto, la edad de Luisa = 15 años

viii) sustituyendo la edad de Luisa en la ecuación de iii) obtenemos x = 20 - 15 = 5.

ix) Por lo tanto, la edad de María es 5 años

6 0

3 years ago