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If y = mx + 4 is a tangent to the ellips...

If y = mx + 4 is a tangent to the ellipse `x^2/25+y^2/4=1`, then `625m^4+25m^2-156` is equal to

A

`-1`

B

0

C

1

D

4

Text Solution

Verified by Experts

The correct Answer is:
B
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