factorise splitting the middle term 4x²-56x+196
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Pℒℤ ℳᎯℛᏦ ℐᏆ ᎯЅ ℬℛᎯℐℕℒℐℰЅᏆ ᎯℕЅᏇℰℛ
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Answer:
4x^2-56x+196=0
x^2-14x+49=0
x^2-7x-7x+49=0
x(x-7)-7(x-7)=0
(x-7)^2=0
x-7=0
x=7
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