Question 01 Form 2 Expand \((2bc + 7xy)^2\) Show Solution \begin{equation*} \begin{split} (2bc + 7xy)^2& = (2bc)^2 + 2\cdot 2bc \cdot 7xy + (7xy)^2\\\\ (2bc + 7xy)^2& = 2^2b^2c^2 + 2\cdot 2bc \cdot 7xy + 7^2x^2y^2\\\\ (2bc + 7xy)^2& = 4b^2c^2 + 28bcxy + 49x^2y^2 \end{split} \end{equation*} Basic Concept (Prev Lesson) (Next Lesson) Question 02 Kembali ke Form 2