Jawab:
f(x)= a x² + bx + c
x1 +x2 = - b/a
x1 . x2 = c/a
Penjelasan dengan langkah-langkah:
f(x) = a(x² + b/a x + c/a)
f(x) = a { x² + (- (x1 +x 2) ) x + (x1 . x2) }
f(x) = a { x² - (x 1 + x2) x + (x1 . x2) }
f(x) = a { ( x- x1 )(x - x2) }
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Jawab:
f(x)= a x² + bx + c
x1 +x2 = - b/a
x1 . x2 = c/a
Penjelasan dengan langkah-langkah:
f(x) = a(x² + b/a x + c/a)
f(x) = a { x² + (- (x1 +x 2) ) x + (x1 . x2) }
f(x) = a { x² - (x 1 + x2) x + (x1 . x2) }
f(x) = a { ( x- x1 )(x - x2) }