what is the value of 4b^2+c^2 for b=6 and c=7

ok so plug in the variables (4*6^2)+(7^2) now do order of operation do the parentheses first so lets make it (4*36)+(49) simplify it even more 144+49 now solve 193 is your answer

 432? look at it this way: 4b(2+c)2 i did the () than the outside numbers. good luck.