How do you expand (4x+3y)^2? Precalculus The Binomial Theorem Pascal's Triangle and Binomial Expansion 1 Answer Shaikh A. Dec 6, 2016 16x^2+24xy+9y^2 Explanation: using formula (a+b)^2=a^2+2ab+b^2 Therefore (4x+3y)^2=(4x)^2+2(4x)(3y)+(3y)^2 16x^2+24xy+9y^2 Answer link Related questions What is Pascal's triangle? How do I find the nth row of Pascal's triangle? How does Pascal's triangle relate to binomial expansion? How do I find a coefficient using Pascal's triangle? How do I use Pascal's triangle to expand (2x + y)^4? How do I use Pascal's triangle to expand (3a + b)^4? How do I use Pascal's triangle to expand (x + 2)^5? How do I use Pascal's triangle to expand (x - 1)^5? How do I use Pascal's triangle to expand a binomial? How do I use Pascal's triangle to expand the binomial (a-b)^6? See all questions in Pascal's Triangle and Binomial Expansion Impact of this question 10027 views around the world You can reuse this answer Creative Commons License