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If y+z=4 and yz=3 then find y³+z³=?​

If y+z=4 and yz=3 then find y³+z³=?​
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If y+z=4 and yz=3 then find y³+z³=?​

User Hamza Waleed
by
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1 Answer

1 vote
Answer is 28
y+z=4 => y=4-z
yz=3 => (4-z)z=3
=> z^2-4z+3=0
=> z=1 y=3 OR z=3 y=1
=>y^3 + z^3 =3^3+1=28
User Nicolas Castellanos
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