KUIS 2x + 4 = 8 3y + 5 = 14 y² - x² = ?.... Question from @xcvi

xcvi @xcvi

August 2022 2 41 Report

KUIS
2x + 4 = 8
3y + 5 = 14
y² - x² = ?

BNP999

Jawaban:

Pembahasan

Sistem Persamaan Linear Satu Variabel

$2x + 4 = 8$

Mencari nilai x yang memenuhi

$2x + 4 = 8$

$2x = 8 - 4$

$2x = 4$

$x = \frac{4}{2} \approx2 \\$

Mencari nilai y yang memenuhi

$3y + 5 = 14$

$3y = 14 - 5$

$3y = 9$

$y = \frac{9}{3} \approx3 \\$

Menentukan nilai dari y² - x²

$= {y}^{2} - {x}^{2}$

$= ( {3})^{2} - (2 {})^{2}$

$= (3 \times 3) - (2 \times 2)$

$= 9 - 4$

$= 5$

Jadi,nilai dari y² - x² adalah 5.

6 votes Thanks 4

JavierSKho13

Penjelasan dengan langkah-langkah:

SPLSV go to FUDRAT

2x + 4 = 8 (×½)

→ x + 2 = 4

→ x = –2 + 4

→ x = 2

3y + 5 = 14

3y = 14 – 5

3y = 9 (×⅓)

→ y = 3

y² – x² = (y – x) × (y + x)

3² – 2² = (3 – 2) × (3 + 2)

9 – 4 = 1 × 5

5 = 5 ✔

1 votes Thanks 2

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