(2x-y)²
mohon pencerahannya ya
mohon pencerahannya ya
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= (2x-y)(2x-y)
= 4x² - 2xy - 2xy + y²
= 4x² - 4xy + y²
atau
(2x-y)²
rumus:
(a-b)² jika dijabarkan menjadi a²-2ab+b², dengan a = 2x, b = y
Maka,
a²-2ab+b²
= (2x)² - 2(2x)(y) + (y)²
= 4x² - 4xy + y²