Algebra Factorisation

Find two numbers that multiply to give 24 and add to give -10

• -2 and 12

• 2 and -12

• -4 and -6

• 4 and -6

Factor
4b⁵+4b³+16b²

• 4b³(b⁴+b²+4b)

• 4b³(b⁴+4b+5)

• 4(b⁵+b³+4b²)

• 4b²(b³+b+4)

The factorization of (x³ - 25 x) is ______

• x (x - 5)²

• x (x + 5)²

• x (x + 5) (x - 5) 

• None of these

Factorise completely

4px + 5xy - 7x

• x (4 - 5y - 7x)

• x (4p + 5y - 7)

• x (4p - 5y + 7x)

• x (4p - 5x - 7y)

Factorise completely

15ab - 3b

• 5a (3b - 3b)

• 3b (5a - 1)

• 3b (5a)

• 5a (3b)

Factorise completely

7c (a + 2b) - 4c (2b + a)

• 3c (a + 2b)

• 11c (a + 2b)

• a + 2b

• c (a - 2b)

Find two numbers that multiply to give -24 and add to give -5

• 3 and -8

• -3 and 8

• -2 and 10

• 4 and -6

Factorise 4x + 16.

• 4(x + 4)

• 4(x - 4)

• x + 4

• 4x + 4

Factorise 4x² - 25

• ( 2x + 5 ) ( 2x - 5 )

• (2x - 5 ) ( 2x - 5 )

• ( 2x + 5 ) ( x + 5 )

• Prime

Factorise: x² + 18x + 81

• (x + 9)(x – 9)

• (x + 18)²

• (x + 9)²

• (x + 6)²