Q. [ 45+ ]
[tex] \tt \: f(x) = 5(x) \times x(x) + {x}^{2} \\ \tt \: f(7) = ...... \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: [/tex]
[tex] \tt \: f(x) = 5(x) \times x(x) + {x}^{2} \\ \tt \: f(7) = ...... \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: [/tex]
Jawaban:
f(7) = 1.764
Penjelasan dengan langkah-langkah:
f(x) = 5(x) × x(x) + x²
f(7) =
f(x) = 5(x) × x(x) + x²
f(7) = 5(7) × 7(7) + 7²
f(7) = (5 × 7) × (7 × 7) + (7 × 7)
f(7) = 35 × 49 + 49
f(7) = 1.725 + 49
f(7) = 1.764