Question

factorise 4xsquare -20x+25 by splitting the middle term
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Answer 1

We have,
${4x}^{2} - 20x + 25$

${4x}^{2} - 10x - 10x + 25$

$2x(2x - 5) - 5(2x - 5)$

$(2x - 5)(2x - 5)$

or

$(2x - 5) ^{2}$