1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nina [5.8K]
3 years ago
8

Solve the equation using the method of factorisation-

Mathematics
1 answer:
saul85 [17]3 years ago
6 0

Answer:

X = 9,X= -5, a =  2, b = -13

Step-by-step explanation:

For (1),

Using Cross-factorization,

it can be reduced to (X - 9)(X + 5) = 0

Equate each factor to 0:

we have X = 9 and X = -5

For (2),

It is the case of completing the Square,

add 4 so we get the completed square ( we want the form X^2 + 2a + a^2)

(X^2 + 4X + 4) - 9

can be simplified to (X+2)^2 -9

However since we added 4 it means we have to subtract 4

So it becomes (X+2)^2 -9 -4

= (X+2)^2 -13

You might be interested in
What is the volume of a sphere with a radius of 6 inches?
nlexa [21]
The answer is (B).
If we substitute r = 6 inches into the volume of a sphere formula we get this:
π6³
Since 6³ = 216, we multiply this by 1.3333 to get 288. If we multiply this by pi we get 288π, or (B).
4 0
3 years ago
Read 2 more answers
There is a box of colored marbles on the counter top. There are 24 blue, 16 green, and 6 red. What is the ratio of red to blue m
cricket20 [7]

Answer:

24:6

Step-by-step explanation:

5 0
3 years ago
Shelly wrote the following number in expanded form. 90,000+600+8.how would she write the number in word form?
murzikaleks [220]

The number 90,000+600+8 in word form is Ninety thousand six hundred and eight.

<u>SOLUTION: </u>

Shelly wrote the following number in expanded form. 90,000+600+8.

We have been asked to write the number in word form.

The number has been expanded into ten thousand, hundred and ten with additive mathematical operator in between.

So, the given number can be written as follows:

90,000 = ninety thousand.

600 = six hundred

8 = eight.

But if we add the numbers together, we have:

=90,000+600+8.

=90,608

So, on putting the number in word from we get:

Ninety thousand six hundred and eight

7 0
3 years ago
I'm confused. I tried reversing it...​
sineoko [7]

Answer:

c=93

Step-by-step explanation:

35+3(x+2)+52=180

87+3(x+2)=180

87+3x+6=180

93+3x=180

3x=180-93

3x=87

x=87/3

x=29

3(29+2)

3(31)=93

4 0
3 years ago
Read 2 more answers
Anyone know? Please help thanks 6th grader here
katen-ka-za [31]

Answer:

The easiest way of calculating discount is, in this case, to multiply the normal price $700 by 30% then divide it by one hundred. So, the discount is equal to $210.

Step-by-step explanation:

30percent \: of \: 700 \\ 30 \times 700 \div 100

mark me as brainliest if it helped you

you will thank me later

7 0
3 years ago
Other questions:
  • The inverse of f(x)=x^2is also a function. Please select the best answer from the choices provided
    5·1 answer
  • At 7pm, the temperature outside was -5
    6·1 answer
  • Which sentences contain two words that are related in the same way as the underlined words in the paragraph?
    6·1 answer
  • Brainliest + Points!
    12·1 answer
  • Convert to scientific notation: 0.0509.
    15·1 answer
  • Help! Using complete sentences, explain how to find the maximum value for each function and determine which function has the lar
    8·1 answer
  • What is the inverse of the function f(x)=x+3
    14·2 answers
  • Please help I really need help !!
    9·2 answers
  • What is 5y-2y=24 help?
    12·2 answers
  • What are the coordinates of point (-2,-7) under the dilation D-2
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!