Question

If p = (r+5) and q = (r-5), show that r² = pq+25.

Answer 1

Here, p = (r+5) and q = (r-5)

Now, p×q = (r+5)(r-5)

or, pq = r^2-25

or, r^2 = pq+25 proved.

Answer 2

Step-by-step explanation:

p=(r+5)

q=(r-5)

Multiplying both equations we get,

pq=(r+5)(r-5)

=>pq=(r)^2-(5)^2

=>pq=r^2-25

=>r^2=pq+25

Hence, proved