All categories

2 years ago

X squared -8x+14=2x-7

Mathematics

1 answer:

Stella [2.4K]2 years ago

5 0

Answer:

x = 3 or x = 7

Step-by-step explanation:

X² - 8x + 14 = 2x - 7

x² - 8x + 14 - 2x + 7 = 0

Now we have a quadratic equation ;

x² - 10x + 21 = 0

-3 and - 7 gives a sum of - 10 and a product of 21

x² - 3x - 7x + 21 = 0

x(x - 3) - 7(x - 3) = 0

(x - 3) = 0 or (x - 7) = 0

x = 3 or x = 7

You might be interested in

I REALLY NEED THIS NOW. PLEASE HELP ME!!

Andre45 [30]

Answer:

4*-2... answer D. is correct :)

7 0

2 years ago

Read 2 more answers

Make n the subject of the formula

kogti [31]

Answer:

$\mathsf{ \frac{m + 21}{5} = n }$

Step-by-step explanation:

To make "n" the subject of the formula, rearrange the formula so it begins with " n = "

To isolate the variable "n", you need to inverse the other terms on that side of the equation where "n" really is.

=> m = 5n - 21

there's a "-21" next to "5n", inverse of subtraction is addition, so add 21 on both sides of the equation.

=> m + 21 = 5n - 21 + 21

=> m+ 21 = 5n

There's also a 5 attached to n, that means the multiplication of n with 5, the inverse of multiplication is division, so dividing both sides of the equation by 5

$\mathsf{ \frac{m + 21}{5} = n }$

3 0

2 years ago

Given that the points (-3, 2) and (1, 2) are vertices of a rectangle, what two sets of coordinates could form the other two vert

Lesechka [4]

Answer:

Step-by-step-by-step

explanation:

4 0

2 years ago

Help please!! I’ll mark you brainliest if you get it right!!!

Nuetrik [128]

8x^2 + 9 - 6x^2 - 2x - 2
= 2x^2 - 2x + 7

answer is B
2x^2 - 2x + 7

3 0

2 years ago

Read 2 more answers

6 times a number ,x, is at least 22

allochka39001 [22]

The answer is most likely 4 because 6 times 4 is 24 at that is atlas 22.

5 0

2 years ago