Hi can anyone help me to expand this? (2t-10)^2 + (4-t^2)^2 Thanks
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I got $\displaystyle t^{4}-4t^{2}-40t+116$...?
Originally Posted by kate45 Hi can anyone help me to expand this? (2t-10)^2 + (4-t^2)^2 Thanks Detail: $\displaystyle (2t-10)^2+(4-t^2)^2$ I assume you know how to square a binomial. $\displaystyle \boxed {(a-b)^2=a^2-2ab+b^2)}$ $\displaystyle (4t^2-40t+100)+(16-8t^2+t^4)$ Combining terms, we have: $\displaystyle t^4-4t^2-40t+116$
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