How do you multiply #(4x + 5)^2#?
4 Answers
Explanation:
#(4x+5)^2=(4x+5)(4x+5)#
#"each term in the second factor is multiplied by "#
#"each term in the first factor"#
#rArr(color(red)(4x+5))(4x+5)#
#=color(red)(4x)(4x+5)color(red)(+5)(4x+5)#
#"distribute each product"#
#=16x^2+20x+20x+25#
#=16x^2+40x+25larrcolor(blue)"collect like terms"#
Explanation:
Use the FOIL method, or the shortcut for squaring binomials.
For any
Our
Therefore:
Alternatively, you could multiply 'each by each,' using the FOIL method.
See a solution process below:
Explanation:
We can use this rule for quadratics:
Let:
Substituting gives:
Explanation:
As you can see, each users are solving it differently and this is what makes Math funny and unique. There are different steps, strategies you can use to solve a problem.
Well, I'm gonna use my favorite method which is Distributive
So let's start: