1.

The root of a quadratic equation y square - 16y + 63 =0 are? ​

Answer»

Answer:

Step-by-step EXPLANATION:

y²-16 y+63=0

y²-7 y-9 y+63=0

y(y-7)-9(y-7)=0

(y-7)(y-9)=0

y=7,9 are roots of this equation

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