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a. keliling
= 2(2x + 5) + 2(3x-6)
= 4x +10 + 6x (-12)
=10x - 2
b. luas
(2x+5)(3x-6)
6x²-12x+15x-30
6x²+3x-30
yang jawab nomor 2 teman yg lain aja ya
= 2 ( 5x -1 )
= 10x - 2
b. L = ( 2x + 5 ) ( 3x - 6 )
= 6x² - 12x + 15x - 30
= 6x² + 3x - 30
2.y - y1 = m ( x - x1 )
y - 3 = 3 ( x - 5 )
y - 3 = 3x - 15
y = 3x - 15 + 3
y = 3x - 12