1) f(x) = 5x² - 4x, f(-4) = …
2) 4² × 2⁴ ÷ 2⁵ = …
2) 4² × 2⁴ ÷ 2⁵ = …
Penjelasan dengan langkah-langkah:
1) f(x) = 5x² - 4x
f(-4) = 5(-4)² - 4(-4)
f(-4) = 5(16) - (-16)
f(-4) = 80 + 16
f(-4) = 96
2.) 4² × 2⁴ ÷ 2⁵
= (2²)² × 2⁴ ÷ 2⁵
= 2⁴ × 2⁴ ÷ 2⁵
= 2^4+4-5
= 2^8-5
= 2³
= 2 × 2 × 2
= 8
nomor 1
diket
f(x) = 5x² - 4x
⠀ ⠀ ⠀ ⠀ ⠀ ⠀
ditanya
f(-4)
⠀ ⠀ ⠀
jawab
f(x) = 5x² - 4x
f(-4) = 5(-4)² - 4(-4)
f(-4) = 5.16 - (-16)
f(-4) = 80 + 16
f(-4) = 96
⠀ ⠀ ⠀
Nomor 2
diket
4² × 2⁴ ÷ 2⁵
⠀ ⠀ ⠀
ditanya
hasil
⠀ ⠀ ⠀
Jawab
4² × 2⁴ ÷ 2⁵
[tex] {2}^{2 \times 2} \times {2}^{4} \div {2}^{5} [/tex]
[tex] {2}^{4} \times {2}^{4} \div {2}^{5} [/tex]
[tex] {2}^{4 + 4 - 5} [/tex]
2³
8
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