Question

if q is the mean proportional between p and r prove that p²-q²+r²= q²[1/p²-1/q²+1/r²]​

Answer 1

Answer:

Answer. Since, q is the mean proportional of p and r. = p2 – pr + r2 = L.H.S. Hence proved

Step-by-step explanation:

please mark me as brainlist

Answer 2

Step-by-step explanation:

−20

−204

−2042+7+6+x

−2042+7+6+x

−2042+7+6+x =15

−2042+7+6+x =1515+x=60

−2042+7+6+x =1515+x=60x=45

−2042+7+6+x =1515+x=60x=45Now,

−2042+7+6+x =1515+x=60x=45Now,5

−2042+7+6+x =1515+x=60x=45Now,518+1+6+45+y

−2042+7+6+x =1515+x=60x=45Now,518+1+6+45+y

−2042+7+6+x =1515+x=60x=45Now,518+1+6+45+y =10

−2042+7+6+x =1515+x=60x=45Now,518+1+6+45+y =1070+y=50

−2042+7+6+x =1515+x=60x=45Now,518+1+6+45+y =1070+y=50y=−20