Factorise the following expression y^2-21y+19 by split the middle term method
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Step-by-step explanation:
Given trinomial is y²-21y + 19
the product of its first and the last term = y² x 19 = +19y²
splitting the middle term into two terms so that their product is +19y² their sum is -21y ( the middle term ) ; we get : -15y +6y
∴ y²-21y +19 = y² -15y +6y +19
now u factorise the above expression
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