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(y + 15)(y - 2)
2)
(2x - 5)(x + 4) / (3x - 2)(x + 4)
(2x - 5) : (3x - 2)
Cek lagi yaaa
= (y-2)(y+15)
2) 2x²+3x-20 = 2x²+8x-5x-20 = 2x(x+4)-5(x+4)
= (2x-5)(x+4)
3x²+10x-8 = 3x²+12x-2x-8 = 3x(x+4)-2(x+4)
= (3x-2)(x+4)
maka, 2x²+3x-20 = (2x-5)(x+4)
3x²+10x-8 (3x-2)(x+4)
= 2x-5
3x-2
semoga membantu :)