Here's link
to the answer:
bit.
ly/3gVQKw3
Step-by-step explanation:
b^2-4b+3=0
b²-3x-b+3=0
b(b-3)-1(b-3)=0
(b-3)(b-1)=0
either
b=3 or b=1
.
2n^2 + 7 = -4n + 5
2n²+4n+7-5=0
2n²+4n+2=0
2(n²+2n+1)=0
(n+1)²=0/2
:.n=-1
.
x - 3x^2 = 5+ 2x - x^2
0=5+ 2x - x^2-x +3x^2
0=5+x+2x²
2x²+x+5=0
comparing above equation with ax²+bx +c we get
a=2
b=1
c=5
x={-b±√(b²-4ac)}/2a ={-1±√(1²-4×2×5)}/2×1
={-1±√-39}/2
I belive the answer could be based on my theory it is 4
I got 2400 because 120 x 80 = 9600 divided by 4 = 2400 idk i may be wrong
this is my sister's account she quit
Answer:
if you have -3×-4=12
Step-by-step explanation:
the reason is that anytime you multiply numbers with negative signs you get a positive value.
In order for you to get a positive number, both numbers you are multiplying must be negative.
But if one of the numbers you are multiplying is a negative and the other number positive then you have a negative value as your answer.
e.g. 3×-4=-12.