Sign In
Ask Question
Mathematics
Marley Frazier
15 July, 12:09
Factorise 45x^2 - 46x + 8
+3
Answers (
1
)
BatMan
15 July, 14:16
0
The way to do this is if the equtation is in
ax^2+bx+c form
then multiply a and c together and get
a times c=y times z where y+z=b then make the form into
ax^2+yx+zx+c so
a=45
b=-46
c=8
a time c=45 times 8=360
then find what 2 numbers add up to - 48 and multiply to get 360
the numbers must be both negative because only same signs multiplied by each other can result in a positive number
factor 360
360,1
180,2
120,3
90,4
72,5
60,6
45,8
40,9
36,10
30,12
24,15
20,18
now add and find which add up to 48
360+1=361
180+2=182
120+3=123
90+4=94
72+5=77
60+6=66
45+8=53
40+9=49
36+10=46 match
30+12=42
24+15=39
20+18=38
the numbers are - 36 and - 10
split it up
45x^2-10x-36x+8
group
(45x^2-10x) + (-36x+8)
factor out the common factors
(5x) (9x-2) + (-4) (9x-2)
reverse distributive property which is ab+ac=a (b+c)
(5x-4) (9x-2)
tada, it's factored
factored form is (5x-4) (9x-2)
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Get an answer to your question ✅
“Factorise 45x^2 - 46x + 8 ...”
in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers
You Might be Interested in
5/3 is less than or greater than 5/2
Answers (2)
If a hospital patient is given 50 mg of medicine, which leaves the bloodstream at 10% per hour, how many mg of medicine will remain in the system after 6 hours?
Answers (1)
When you double my number and add five you get 17 what is my number
Answers (2)
Do you know what is - 7v-3-7?
Answers (1)
Cattie started with 12 ounces of water when she began her walk when she finished walking she had 2 1/4 ounces of water left how much did she drink
Answers (1)
New Questions in Mathematics
Mrs brown wants to cook five dishes on a stove with two burners. The time she needs to cook each dish are 40 minutes, 15 minutes, 35 minutes, 10 minutes, and 45 mins. What is the least amount of time she needs to cook all five dishes.
Answers (1)
Simplify: - 3 (y+2) ^2-5+6y what is the simplified product in standard form
Answers (1)
Dale has 9 homework assignments due this week, and he needs to finish 2 of them before his friend comes over this afternoon. In how many orders can he pick out and complete 2 of the assignments?
Answers (1)
What is the probability of drawing a pair of 6 inch pliers and NOT drawing a large hammer
Answers (2)
Mrs. lauren made 12 pillows from 16 yards of the same fabric. how much fabric was used to make each pillow
Answers (2)
Home
»
Mathematics
» Factorise 45x^2 - 46x + 8
Sign In
Sign Up
Forgot Password?