senseimichael
New member
- Joined
- Mar 11, 2020
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- 44
If g^2+h^2=172 and 4hg=408, find the value of (3g-7h)^2.
Expanding the expression gives me 9g^2- 42hg + 49h^2 [edited]. Getting the 42hg solved is easy enough, but how on earth do I solve the 9g^2+49h^2?
Expanding the expression gives me 9g^2- 42hg + 49h^2 [edited]. Getting the 42hg solved is easy enough, but how on earth do I solve the 9g^2+49h^2?
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