Question

Find the equation of a circle with centre at origin
and radius 3​

Answer 1

Step-by-step explanation:

For an expression of the form (a + b)(c + d), the expanded version is ac + ad + bc + bd, in other words everything in the first bracket should be multiplied by everything in the second. Factorising is the reverse of expanding brackets, so it is, for example, putting 2x² + x - 3 into the form (2x + 3)(x - 1).

Answer 2

Answer:

here is the answer

Step-by-step explanation:

hope it helps you.