Answer:
[tex]g =7^{2} -w^{2}[/tex]
Step-by-step explanation:
[tex]w = 7 -\sqrt{g} \\re arrange\\\sqrt{g} = 7-w\\square both side\\\sqrt{g}) ^{2} =(7-w)^{2} \\g = 7^{2} -w^{2}[/tex]
