Question

factorise the expression and divide y²-10y+21÷y-3​

Answer 1

Factorisation of y²-10y+21

y² + ( - 7 - 3 )y + 21

y² - 7y - 3y + 21

y( y -7 ) - 3 ( y - 7 )

= ( y - 7 ) ( y - 3 )

Division*

$\frac{(y - 7) \: (y - 3)}{(y - 3)} \\ \\ = (y - 7)$

Quotient = (y - 7)

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