Emilytitzer
Emilytitzer
08-04-2015
Mathematics
Answered
Solve the equation 7x^2-8x=-1
Answer :
belcatya
belcatya
08-04-2015
7x²-8x=-1
7x²-8x+1=0
on theorem Vieta if 7-8+1=0 ⇒x₁=1
(7x²-7x)-(x-1)=0
7x(x-1)-(x-1)=0
(x-1)(7x-1)=0
x₂=1/7
Answer: x₁=1 x₂=1/7
Answer Link
VIEW ALL ANSWERS ( 26+ )
Other Questions
The force of attraction acting between two objects is called a. Inertia b. universal gravitation c. Momentum d. Buoyancy
how would you find points on a graph
What number is the same as 7 tens and 20 ones? What number is the same as 5 tens and 13 ones ?
Most of the mass of an atom is concentrated in the________?
One problem whose solution eluded Mohandas Gandhi was the...?
PLEASE HELP ! What happens in exponential growth as the population gets larger?A.the population grows slowlyB.the ecosystem grows fasterC.the ecosystem grows sl
What number is the same as 7 tens and 20 ones? What number is the same as 5 tens and 13 ones ?
Blake times 4 equals 92
why was it risky to sign the declaration of independence
how did New England's textile industy affect women?