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Q: What is the solution set of x2-7x-18 equals 0?

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a = [ 0, 4 ]

(0, -14)

x = 0 or x = 2

x-2y=0 x=2y The solution set is the set of all (x,y) such that x=2y

'x' must be zero, so the solution set is [ 0 ].

17

(-2,-1)

Not sure about the set builder notation, but Q = {0}, the set consisting only of the number 0.

7 and (-3/2)

r=0 is the solution...

x2 + 49 = 0 ∴ x2 = -49 ∴ x = 7i

(x-4)(x+4) = 0 x = 4 or x = -4

6x2 - 24 = 0 6x2 = 24 x2 = 4 x = (+/-) 2 --------------

m = 0

Yes, it is the only solution.

They are: x = 5/3 and x = -3

It is: x = 5/3 and x = -3

Yes.

X2 - 3X - 4 = 0factored(X + 1)(X - 4)----------------X = - 1X = 4-------------------(- 1, 0) and (4, 0)================solution set of X interception points

The graphs of those two equations are straight lines, each of which passes through the origin. The origin is the common solution ... the point (0, 0).

root

I will assume you mean,X2 - 16 = 0X2 = 16take square root each sideX = (+/-) 4=========(-4, 0) and (4, 0)----------------------

3x2-4x-15 = 0 (3x+5)(x-3) = 0 x = -5/3 or x = 3

The two equations are linear.

That means there is no solution.There is no set of numbers that you can assign to the variables in the system of equationsthat will make '2' equal to '0'.