x^2 - y^2 = 18 x - y = 3 (x + y)^2 = ?
Matematika
MIlhamAkbhar
Pertanyaan
x^2 - y^2 = 18
x - y = 3
(x + y)^2 = ?
x - y = 3
(x + y)^2 = ?
1 Jawaban
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1. Jawaban Ashiela
x-y = 3
x² - y² = 18
(x + y)(x - y) = 18
(x + y)(3) = 18
(x + y) = 18/3 = 6
(x + y)² = (6)² = 36