Identify common factor: Identify a common factor in the terms 2x2 and −50.Both terms are divisible by 2.Factor out the common factor of 2.2(x2−25)
Factor out common factor: Recognize that x2−25 is a difference of squares.x2=x×x=(x)225=5×5=(5)2So, x2−25=(x)2−(5)2
Recognize difference of squares: Apply the difference of squares formula to factor x2−25.The difference of squares formula is a2−b2=(a−b)(a+b).(x)2−(5)2=(x−5)(x+5)
Apply difference of squares formula: Combine the factored form of x2−25 with the common factor we factored out in Step 1.2(x−5)(x+5)This is the completely factored form of 2x2−50.
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