6x-5 = 7-9x
x=4 /5
Simplify: (-4)2 + 32(4)
144
Simplify:
3x2 + 5x - 2 + (4x2 - 6x - 8)
7x2 - x - 10
Simplify:
(x + 4)(x + 4)
x2 + 8x +16
What is the greatest common factor of 18 and 45?
9
6y-5 = -3(2y+1)
y = 1/6
Simplify: (-5)2 - 52 + 6(2)
-15
Find the sum of x2 +3x - 5 and -3x2 - 4x +20
-2x2 - x + 15
Simplify:
(2x + 3)(3x + 4)
6x2 + 17x + 12
A triangle has vertices on a coordinate grid at V(−7,5), W(6,5), and X(6,−10). What is the length, in units, of VW?
13
-1.6r +5 = -7.8
r=8
14 / (8 -20 /2 )
-7
Find the difference between:
-x2 + 4x - 7 and 8x2 + 6x - 4
-9x2 - 2x - 3
Simplify:
(3x + 5)2
9x2 + 30x +25
One of the legs of a right triangle measures 13 cm and its hypotenuse measures 18 cm. Find the measure of the other leg. If necessary, round to the nearest tenth.
12.4
Identify the error in the problem
5+3x = 5x-19
-3x -3x
5= 2x -19
+19 +19
24/24 =(2x)/24
x= 1/12
Last step divided by 24 instead of 2
(7- 3²)² + 6²
40
Subtract -3x2 +5x - 6 from 4x2 + 7x + 17.
7x2 + 2x + 23
Simplify and give in standard form:
(2m - 5)2
4m2 - 20m + 25
A middle school took all of its 6th grade students on a field trip to see a play. The students filled 1491 seats, which was 71% of the total number of seats in the theater. How many total seats were in the theater?
2100
Identify the error in the problem?
5(x+3) = 4x-2
5x+3 = 4x-2
-4x -4x
x+3 = -2
-3 -3
x = -5
Did not distribute properly
(6+9 divide 3 + 15)/(8-2)
4
(-6n-13n²)+(-3n+9n²)
-4n²-9n
Simplify:
(a + 5)(2a2 + 3a - 6)
2a3 + 13a2 + 9a - 30
Factor.
x2−8x−20
(x+2)(x−10)