Question

find the product (2x+5)^2

Answer 1

4x^2+20x+25

btw wolframalpha.com can also do this

Answer 2

(2x+5)(2x+5)

Answer 3

Multiply through.

Answer 4

i see.....5^2=25

Answer 5

Yes

Answer 6

5*5 = (5)^2

Answer 7

2x^2=2x.2x 5^2=5.5

Answer 8

so the answer is (2x+5)(2x+5) @olympics

Answer 9

Nope, you have to multiply it now.

Answer 10

(2x+5)(2x+5) = 4x^2 +10x+10x+25 collect like terms, factor, etc.

Answer 11

4x^2+10x+10x+25
4^2+20x+25

Answer 12

Now factor!

Answer 13

can't think of two numbers which product is 25 and sum 20

Answer 14

x = -5/2 would be your solution

Answer 15

If you set to 0 you don't have to do any of that stuff...

Answer 16

how @iambatman

Answer 17

use quadratic formula
u'll get x= -5/2

Answer 18

Olympics gave expanded form, you just need the root I assume.