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Verified answer
(b+15)xb = 1000b(b)+b(15) = 1000 = b²+b15 = 1000 = b²+b15 - 1000 = 0
b jadi kuadrat karena hukum distributif
a x (b + c) = (a x b) + (a x c) atau a × (b – c) = (a × b) – (a × c)
semoga bantu yaaa
maka( b × b ) + ( 15 × b )
jadi b^2 + 15 b