0
X^2 + 4X -7 = 0
needs quadratic equation
-b +/- sqrt(b^2-4ac)/2a
a = 1
b = 4
c = -7
-4 +/- sqrt(4^2-4(1)(-7))/2(1)
-4 +/- sqrt(16+28)/2
-4 +/- sqrt(44)/2
-4 +/2sqrt(11)/2
exact answer, less factoring
Still curious? Ask our experts.
Chat with our AI personalities
Fran
Rafa
EzraAdd your answer:
Earn +20 pts
How do you solve 16t squared minus 9 equals 0?
Solve this problem -x squared -40x- 80 =0
How do you solve 5x-to-the-4th minus 483x-cubed plus 94x-squared plus 126x minus 18 equals 0?
2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222
How do you solve X squared minus four for x equals 3?
Your Problem: X - 4 = ?Current Problem: 3 [squared] - 4 = ?How: When a numbered is squared, it means you multiply it against itself. So, 3 squared equals 3x3.3x3 = 9So, you would then take 9 and minus it by 4, which would than equal 5.Answer:3 [squared] - 4 = 5or9 - 4 = 5
3x squared minus 2x when x equals 5?
You fill in for x and solve the equation3(5)^2 - 2(5)15^2 - 10; now solve
What minus 9 equals 16?
To solve the equation "x - 9 = 16," we need to isolate the variable x. Adding 9 to both sides of the equation, we get x = 16 + 9. Therefore, x = 25. So, 25 minus 9 equals 16.
