f(x) = 8x² + x² - x
f(-2) = 8 ( -2 )² + ( -2 )² - ( - 2 )
f(-2) = 8 ( -2 × -2 ) + ( -2 × -2 ) + 2
f(-2) = 8 ( 4 ) + 4 + 2
f(-2) = 32 + 4 + 2
f(-2) = 36 + 2
f(-2) = 38
Jawaban:
f(x) = 8x² + x²- x
f(-2) = 8 × (-2)² + x² - x
f(-2) = -16² + x² - x
f(-2) = (16 + 16) + x²- x
f(-2) = 32 + x² - x
f(-2) = 32 + (-2)² - x
f(-2) = 32 + (2 + 2) - x
f(-2) = 32 + 4 - x
f(-2) = 32 + 4 - (-2)
f(-2) = 38 ✓
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f(x) = 8x² + x² - x
f(-2) = 8 ( -2 )² + ( -2 )² - ( - 2 )
f(-2) = 8 ( -2 × -2 ) + ( -2 × -2 ) + 2
f(-2) = 8 ( 4 ) + 4 + 2
f(-2) = 32 + 4 + 2
f(-2) = 36 + 2
f(-2) = 38
Jawaban:
f(x) = 8x² + x²- x
f(-2) = 8 × (-2)² + x² - x
f(-2) = -16² + x² - x
f(-2) = (16 + 16) + x²- x
f(-2) = 32 + x² - x
f(-2) = 32 + (-2)² - x
f(-2) = 32 + (2 + 2) - x
f(-2) = 32 + 4 - x
f(-2) = 32 + 4 - (-2)
f(-2) = 32 + 4 + 2
f(-2) = 36 + 2
f(-2) = 38 ✓