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Q: What is the value of k when 4x squared plus kx plus 9 equals 0?

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x = -½

y=xsquared-4x+2

The discriminant is 121.

Y = x squared -4x plus 3 is an equation of a function. It is neither called a domain nor a range.

It equals 53X- a number is squared when it is multiplied by itself, so 7X by 7X = 49X. 2X by 2X =4X, so 49X + 4X is 53X.

She isn't. 4x squared is 4 times (x squared). That is, 4 times (3 squared) = 4 times 9. If you want it to be the square of 4x (which would be the square of 4 times 3, ie, 12), you have to write it as (4x)squared.

X=1/2

(2x + 1)(2x + 1) or (2x + 1)2 so x = -0.5

It is: 4x squared

The value of x is 2

8x squared

27

4x times 4x equals 16x2.

13

The derivative of 2x2 + 4x + 8 is 4x+4.

It is an equation and the value of x is 4

It is an equation and the value of x is 4

It is an equation and the value of x is 6

It is an equation and the value of x is 8

Y = x2 + 4x + 11OK. That's very interesting.Is there a question ?

B squared -4ac is the discriminant. you get 0, which means it will have one rational solution.

2

The value of x is -4

10-2y

-2