Solve the quadratic equation
y^2 −10y+21=0
y=?
1 answer:
Answer: y = 3 or y=7
Step-by-step explanation:
what 2 factors of 21 can equal 10 when added together (1*21- no 3*7- yes)
Factor
y-3=0
y=3
or y-7=0
y=7
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