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kotegsom [21]
3 years ago
8

Can you help me solve this radical equation √y-10 = y-2 the sqrt sign is only over the y-10

Mathematics
1 answer:
matrenka [14]3 years ago
7 0
D:y-10\geq0 \wedge y-2\geq0\\
D:y\geq10 \wedge y\geq2\\
D:y\geq10\\\\
\sqrt{y-10}=y-2\\
y-10=(y-2)^2\\
y-10=y^2-4y+4\\
y^2-5y+14=0\\
\Delta=(-5)^2-4\cdot1\cdot14=25-56=-31\\
\Delta
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