Question

Multiply

(√5+1)(8√5+1)

Answer 1

Any ideas?

Answer 2

answer was 41+9√5 no idea how it got there

Answer 3

Each of the numerical expressions within the parentheses is called a binomial, do you recall how to use the FOIL method of multiplying binomials?

Answer 4

was it x^2+2xy+y^2 for this one?

Answer 5

ah nvm, as for Foil i need steps to show me for this one for others i know what to do

Answer 6

1. Multiply the first terms of the binomials

Answer 7

5*8√5*√5+8√5+1 looks wrong but eh

Answer 8

\[\sqrt{5}*8 \sqrt{5} = ?\]

Answer 9

for the first step?

Answer 10

Yes

Answer 11

i know where 41 comes from but no idea where 9√5 comes in

Answer 12

8*5 =40+1 = 41 right?

Answer 13

can you like show me all the steps how its done so i can duplicate that method and learn how it was done?

Answer 14

\[\sqrt{5}*8\sqrt{5} = 8\sqrt{25}=8*5=40\]

Answer 15

√5 *√5 = 5, you know that's how square root work, right?

Answer 16

alright i get that so far

Answer 17

2. Multiply the first term of each binomial by the last term of the other and add these products.

Answer 18

so would the second line be 8√5+1?

Answer 19

40+8√5+1?