Answer:
-3(3 x + 2) (2 x - 7)
Step-by-step explanation:
Factor the following:
-18 x^2 + 51 x + 42
Factor -3 out of -18 x^2 + 51 x + 42:
-3 (6 x^2 - 17 x - 14)
Factor the quadratic 6 x^2 - 17 x - 14. The coefficient of x^2 is 6 and the constant term is -14. The product of 6 and -14 is -84. The factors of -84 which sum to -17 are 4 and -21. So 6 x^2 - 17 x - 14 = 6 x^2 - 21 x + 4 x - 14 = 2 x (3 x + 2) - 7 (3 x + 2):
-32 x (3 x + 2) - 7 (3 x + 2)
Factor 3 x + 2 from 2 x (3 x + 2) - 7 (3 x + 2):
Answer: -3(3 x + 2) (2 x - 7)
It can sometimes be rational
Answer:
3/4
Step-by-step explanation:
1 hour is 60 minutes
45 minutes
---------------------
60 minutes
Divide top and bottom by 15
3
----
4
Answer:
You divide 5 by 47 and then see if the fourth digit after the decimal is 5 or greater or less than 5. If it's less, the digit before it remains the same and the decimal cuts off at it. If it's 5 or greater, the digit before it goes up one and the. decimal cuts off at it. Using this, you should get 0.106, I think.
3x^2+10x-8=0
a=3. b=10. c=-8
a*b
3*-8= -24 (now you need to find two factors of -24 when added you get b which is 10.)
-2*12= -24
-2+12= 10
So -2 and 12 is the two factors, now remove 10 and use them, don’t worry remember those factors when added equal 10
(3x^2+12x)-(2x-8)=0
3x(x+4)-2(x+4)=0. (When multiplying, dividing, adding or subtracting two negative it become a positive so that’s how -2 into -8 I got +4)
(x+4) (3x-2)
X+4=0. 3x-2=0
X= -4. 3x= 2
3x/3 = 2/3
x=2/3
I hope this helps you!!