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Kale Eichmann

Feb 20, 2025

Need help on how to expand (X+H)^4!!?

Hello,I’m trying to work out {(x+h)^4 -x^4}/hI would gratefully like the answer with explantion because I am having trouble working it out. Plus (X+h)^4, I need help working it out and somewhere I have seen a sort of general formulas for bracket sums with powers.Thank you very much.

6 Answers

(x + h)⁴ = x⁴ + 4x³h + 6x²h² + 4xh³ + h⁴the powers of the x decrease and the powers of the h increasethe coefficients come from pascals triangle11 11 2 11 3 3 11 4 6 4 1 1 5 10 10 5 1etcThese can also be found using combinationsnCr(a + b)^n = ∑(r = 0 to n) nCr a^(n – r) b^r... Show More
Memorize Pascal’s triangle it will help a lot, multiplying all the terms out takes far too long. I’ve included a link so you can see what I’m talking about.Expanding (x+h)^4 results in (x^4+4x^3h+6x^2h^2+4xh^3+h^4-x^4)/hSimplifies to (4x^3h+6x^2h^2+4xh^3+h^4)/h after subtracting the x^4 term. Dividing by h results in 4x^3+6x^2h+4xh^2+h^3. This is your final answer.... Show More
(x+h)^4=[(x+h)^2]*[(x+h)^2] This is the long way to do it, but it works with any number of terms inside the parentheses and any power.The general formula for binomial powers comes from combinatorial calculus.Look up Pascal’s triangle for a simple way to derive the coefficients.... Show More
For the best answers, search on this site shorturl.im/awozzHi, (x + 4)(x + 3) = x(x + 3) + 4(x + 3) = x² + 3x + 4x + 12 = x² + 7x + 12 <==ANSWER I hope that helps!! 🙂... Show More
try looking up the pascals triangle, it will help you a lot... Show More

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