Sal expresses (x+7)^2 as x^2+14x+49 and discusses how the general square (x+a)^2 can be written as x^2+2ax+a^2.
Find special products of binomials (basic) is a free educational video by Khan Academy.It helps students in grades 0 practice the following standards HSA.SSE.B.3.
1. HSA.SSE.B.3 : Choose and produce an equivalent form of an expression to reveal and explain properties of the quantity represented by the expression.
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