0
What is the answer to 4x squared plus 7x minus negative 2 equals 0?
Wiki User
∙ 11y ago
4X2 + 7X - 2 = 0
I am too lazy to use anything but the quadratic formula here!
X = - b (+/-) sqrt(b2 - 4ac)/2a
a = 4
b = 7
c = - 2
X = - 7 (+/-) sqrt[(72 - 4(4)(- 2)]/2(4)
X = - 7 (+/-) sqrt(49 + 32)/8
X = - 7 (+/-) sqrt(81)/8
X =[ - 7 (+/-) 9]/8
=====================so,
X = 1/4
=======and
X = - 2
=====
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
If x squared minus y squared equals 10 and x plus y equals 5 what is x minus y?
2
In matrix multipliccation when does A plus B times A minus B equals A squared minus B squared?
All the time
What is x plus 2 squared equals negative 7?
Negative 11
13 plus negative 12 minus negative 5 equals?
6
What is negative point seven five x squared plus five x minus four?
54.3 squared
What are the terms of a quadratic equation?
x equals negative b plus or minus the square root of b squared minus 4bc over 2a
If x squared minus y squared equals 10 and x plus y equals 5 what is x minus y?
2
Minus multiplied by a plus?
Negative times positive equals negative.
What is plus times a minus?
Positive (Plus) times Negative (Minus) always equals a negative (minus).
In matrix multipliccation when does A plus B times A minus B equals A squared minus B squared?
All the time
What is x plus 2 squared equals negative 7?
Negative 11
What is x squared equals 36?
x = plus or minus 6.
What is the answer to negative x minus 4x minus 7 equals negative 2x plus 5?
x= Negative 4
Negative 3 minus negative 4 equals what?
(-3)-(4)=(-3)+4=1 Minus times minus equals plus. The reason for this we need not discuss.
13 plus negative 12 minus negative 5 equals?
6
What is negative point seven five x squared plus five x minus four?
54.3 squared
How do you solve 5x-to-the-4th minus 483x-cubed plus 94x-squared plus 126x minus 18 equals 0?
2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222
