Jawaban:
2x + 3 = x + 4
2x - x = 4 - 3
x = 1
DE² = (2x + 3)² - AE
DE² = (2(1) + 3)² - 4²
DE² = 5²- 4²
DE² = 25 - 16
DE² = 9
DE. = √9
DE = 3
keliling = 4 (2x + 3)
= 8x + 12
= 8 (1) + 12
= 20
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Jawaban:
2x + 3 = x + 4
2x - x = 4 - 3
x = 1
DE² = (2x + 3)² - AE
DE² = (2(1) + 3)² - 4²
DE² = 5²- 4²
DE² = 25 - 16
DE² = 9
DE. = √9
DE = 3
keliling = 4 (2x + 3)
= 8x + 12
= 8 (1) + 12
= 20