Question

4. a2 + 12ab + 27b2
5. 2a2 + 30a + 100
im really stuck

Answer 1

For 4.) You have to look for two numbers that when multiplied will give you 27 and when added together will yield 12 which is 3 and 9

Answer 2

( a + 3b)(a + 9b)

Answer 3

For 5.) it makes it easier when you factor out a 2 from the expression

Answer 4

2(a2 + 15a + 50)
So which two numbers when multiplied give you 50 and when added give you 15?

Answer 5

10 and 5

Answer 6

exactly so you have as a result: 2(a + 5)(a + 10)

Answer 7

thanks for explaining

Answer 8

you're welcome