10-Minute Brain Games: Logic and Reasoning

10-Minute Brain Games: Logic and Reasoning

Matematika Sekolah Menengah Pertama 1) f(x) = 5x² - 4x, f(-4) = …

2) 4² × 2⁴ ÷ 2⁵ = …​

1) f(x) = 5x² - 4x, f(-4) = …

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]

8

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