Step-by-step explanation:
(a-b)^2=(a^2-2*a*b+b^2)
4*(x^2-2x+1)-9=4x^2-8x+4-9=4x^2-8x-5
if you have to calculate the Δ
there is it: 4x^2-8x-5=0
Δ=b^2-4*a*c=64-4*4*(-5)=64+80=144
-b±Δ/2*a=8±12/8=
=8+12/8=20/8|:4=5/2
=8-12/8=-4/8|:4=-1/2
Answer: 1/3
Step-by-step explanation:
1/
2
−
1
/6
=
1
/2
−
1
/6
=
1
/2
+ −1
/6
=
3
/6
+ −1
/6
=
3+−1
/6
=
2
/6
=
1
/3
(Decimal: 0.333333)
Before the fraction: -1/2, i have a negative sign
use y=mx+b
3=-1/2(2)+b
3+1=-1+b+1
4=b
check your work
0=-1/2x+4
0+4=-1/2x
(4)÷(-1/2)=(-1/2x)÷(-1/2)
-2=x
another pair is (-2,0) use this to figure out the other points, and/or the points you have in the multiple choice.
Answer:depends on how u want it in mixed for its 10 22/35
Step-by-step explanation:
If u want it in another form use m a t h w a y but together
Answer:
the 1st, the 2nd one, and the 4th one
Step-by-step explanation:
Hope this helps and have a good day !
