jessihogan
jessihogan
13-04-2018
Mathematics
contestada
what are the solutions to 2x^2 + 7x = 4
Respuesta :
dannielle
dannielle
13-04-2018
2x^2+7x-4=0
Δ=7^2-4*2*(-4)
Δ=49+32
Δ=81
x1=(-7+V81)/4=(-7+9)/4=2/4=1/2
x2=(-7-9)/4=-16/4=-4
the solutions:
x1= 1/2
and
x2= - 4
Answer Link
VER TODAS LAS RESPUESTAS ( 84+ )
Otras preguntas
The sum of three consecutive even numbers is 156. What is the smallest of the three numbers
If a is an integer, which of the following could be a4 ? A. 1.6 X 10^11 B. 1.6 X 10^12 C. 1.6 X 10^13 D. 1.6 X 10^14 E. 1.6 X 10^15
A man hits a golf ball (0.2 kg) which accelerates at a rate of 20 m/s2. What amount of force acted on the ball?
The area of a storm shelter is 24 square meters the length is 5 and one third meters what is the width of the storm shelter?
What is the value of the expression? (–2)5
where is science done
how do you simplified 7a(3b-2c+4)
In which area did the Freedmen's Bureau have the most success for African Americans?
A stone thrown horizontally at a speed of 5m/s from the top of a cliff 78.4m high. A. How long does it take the stone to reach the bottom of the cliff? B. How f
A single tree produces about 2.6 x 10^2 lb of oxygen each year.The Amazon rainforest has about 3.9 x 10^11 trees.About how many pounds of oxygen are produced in
