y = x^2-5 (1) y = 4x (2) 4x = -y x = -y/4 (3) Penyelesaian ? udh gue kerjain ampe segituu trus otak gue buntuu, bantuin eyyy
Matematika
9plus1
Pertanyaan
y = x^2-5 (1)
y = 4x (2)
4x = -y
x = -y/4 (3)
Penyelesaian ?
udh gue kerjain ampe segituu trus otak gue buntuu, bantuin eyyy
y = 4x (2)
4x = -y
x = -y/4 (3)
Penyelesaian ?
udh gue kerjain ampe segituu trus otak gue buntuu, bantuin eyyy
1 Jawaban
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1. Jawaban hendrisyafa
y = x²-5
y = 4x
x²-5. = 4x
x²-4x-5. = 0
(x-5)(x+1) = 0
x = 5 dan x = -1
y = 4.5
= 20
(5,20)
y = 4(-1)
= -4
(-1,-4)