a.(4x-5)(4x+5) b.(x-2)(4-x) c.(3x-1)(1-3x)
Matematika
ferialdi166
Pertanyaan
a.(4x-5)(4x+5)
b.(x-2)(4-x)
c.(3x-1)(1-3x)
b.(x-2)(4-x)
c.(3x-1)(1-3x)
1 Jawaban
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1. Jawaban eripane05
a.(4x-5)(4x+5)
= (4x)² - (5)²
= 16x² - 25
b.(x-2)(4-x)
= x(4) - x(x) - 2(4) - 2(-x)
= -x² + 6x - 8
c.(3x-1)(1-3x)
= 3x(1) - 3x(3x) - 1(1) + 1(3x)
= -9x² + 6x - 1