Find f, (x.y) if f(x.y)=x - 5xy- 4y2.

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Q: 15 (²) and (6) Let f(x) = 6 + 5x². Find f ‚ƒ(1) . Are they equal? *ƒ(6)*

A: Given: f(x)=6+5x2 . . . .(1) To find: f16, f(1)f(6) and to check if f16 and f(1)f(6) are equal or…