The circle c has equation

the lines l1 and l2 are each a tangent to the circle and intersect at the point (0, 12). find the equations of l1 and l2, giving your answers in the form y=mx+c.

69 i think because is the only one square

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.