Answer:
Step-by-step explanation:
delta=( m-3)^2+4*5
pt có 2 nghiệm x1 x2 khi delta>0<=>(m-3)^2+20>0(luôn đúng)
Viet: x1+x2=3-m
x1x2=-5
x1^{2} +x2^{2} -5x1x2+3x1+3x2=4
<=>(x1+x2)^{2}-7x1x2+3(x1+x2)=4
<=>(3-m)^2+35+3*(3-m)=4
<=>m^2-6m+9+35-3m+9-4=0
<=>m^2-9m+49=0
Answer:
2z -10
Step-by-step explanation:
g(x) = 2x - 4.
Let x =z-3
g(z-3) = 2(z-3) - 4.
Distribute
g(x-3) = 2z -6 -4
=2z -10
Answer:
Option C is answer.
Step-by-step explanation:
Here we can see the terms of b are in the numerator and in denominator
but sign of exponent of b in the denominator is negative
therefore for simplifying the exponent of b ,we have to apply exponent rule of division which is 
Here terms of b are 

therefore exponent of b is 7 on simplifying.
Answer:
y=2x+6
Step-by-step explanation:
Slope of line is 2
Plug slope and first set of coords into point-slope intercept form
Answer
The answer and procedures of the exercise are attached in the following archives.
Step-by-step explanation:
You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.