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krok68 [10]
3 years ago
9

Solve the quadratic equation y^2 −10y+21=0 y=?

Mathematics
1 answer:
Firdavs [7]3 years ago
8 0

Answer: y = 3 or y=7

Step-by-step explanation:

y^{2} -10y+21

what 2 factors of 21 can equal 10 when added together (1*21- no 3*7- yes)

Factor

(y-3)(y-7)

y-3=0

y=3

or y-7=0

y=7

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