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Verified answer
Kelas 8 MatematikaBab Teorema Pythagoras
AB = 5
√((9 - 6)² + (a - 2)²) = 5
√(9 + (a - 2)²)² = 5²
9 + (a - 2)² = 25
(a - 2)² = 25 - 9
(a - 2)² = 16
a - 2 = +- √16
a - 2 = +- 4
a = 2 + 4
a = 6
a = 2 - 4
a = -2
✩✩ C ✩✩