x2 = 4
x = 2 x = -2
2x=√x+32x=x+3
x=1
The sum of a number and its square is 30. Find the numbers.
-6 or 5
x^2 - 2x + 5
0 solutions
f(x)=-x2+8x-15
(4,1)
4x2 = 400
x = 10 x = -10
√33−2x=x+133−2x=x+1
x=4
A rectangular garden has an area of 14 m2 and a perimeter of 18 meters. Find the dimensions of the rectangular garden. The figure below shows how to set up the problem.
w = 7 and w = 2
The number of times 6x^2 - 2x -3 crosses the x-axis
two times
f(x)=5x2+2x-2
(-1/5,-11/5)
x^2-361=0
19
1+√1−x=√2x+41+1−x=2x+4
1+√1−x=√2x+4
The length of a photograph is four cm longer than its width. The area is 45. Find the length and width of the photograph.
width of 5 and a length of 9?
The number of roots in -x^2 - 5 = 6x
1 root
f(x)=x2-2x
(1,-1)
5x2 + 3 = 128
x = 5 x = -5
7=√39+3x−x
x=−1
how many solutions does 4x^2 = 8x - 4 have
1
y = -3x2 -6x + 2
(-1,5)
x^2-144
12
x=1+√2x−2
x=1 or x=3
how many solutions does 9x^2 + 6x + 6 = 5 have
1