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7.5

100

3x + 12

3(x + 4)

200

15x² + 20x

5x(3x + 4)

300

7ab - 14a³

7a(b - 2a)

400

6x³y⁷ - 24x⁵y⁴

6x³y⁴(y³ - 4x²)

500

14m²n⁵ - 21m⁴n⁵ + 7mp³

7m(2mn⁵ - 3m³n⁵ + p³)

7.6

100

x² - 49

(x + 7)(x - 7)

200

9 - y²

(3 + y)(3 - y)

300

m² + 100

Prime

400

25x⁴ - 36

(5x² + 6)(5x² - 6)

500

2 - 50x²

2(1 - 5x)(1 + 5x)

7.7

100

x² + 8x + 15

(x + 3)(x + 5)

200

x² - 10x + 24

(x - 4)(x - 6)

300

x² + 5x - 36

(x + 9)(x - 4)

400

x² - x - 12

(x - 4)(x + 3)

500

2x² + 14x + 20

2(x + 2)(x + 5)

7.8

100

2x² + 9x + 9

(2x + 3)(x + 3)

200

6x² +4x - 4

(3x - 2)(x + 2)

300

6x² + x - 2

(2x - 1)(3x + 2)

400

2x² - 7x + 6

(2x - 3)(x -2)

500

4x² + 14x + 6

2(2x + 1)(x + 3)

7.9

100

2p² + p + 6p + 3

(2p + 1)(p + 3)

200

2x² - 6x + 5x - 15

(x - 3)(2x + 5)

300

12p² + 8p + 9p + 6

(3p + 2)(4p + 3)

400

5x² - 10x - 6x + 12

(x - 2)(5x - 6)

500

2a³ + 8a² -3a - 12

(a + 4)(2a² - 3)