(7-x)²-(x+8)(x-8)=43
(3m+4)(3m-4)-(3m+5)²=-11
(7-x)^2-(x+8)(x-8)=43 (3m+4)(3m-4)-(3m+5)^2=-11
49-14x+x^2-x^2+64-43=0 9m^2-16-(9m^2-30m+25)-11=0
-14x+70=0 9m^2-16-9m^2+30m-25-11=0
-14x=-70 30m-52=0
x=-70/-14 30m=52
x=70/14 m=52/30
x=5 7
m= 1-----
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