Question

• Find y
-y^2 +8y -15​

Answer 1

Answer:

y = 5,3

Step-by-step explanation:

• -y²+8y-15
• by changing signs
• y²-8y+15=0
• y²-5y-3y+15=0
• y(y-5)-3(y-5)=0
• (y-5)(y-3)=0
• (y-5)=0 (y-3) = 0
• y = 5 y = 3

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