20² - x!! + 7x
x → 3
= ( 20 × 20 ) - 3!! + 7(3)
= 400 - ( 3 × 1 ) + ( 7 × 3 )
= 400 - 3 + 21
= 397 + 21
= 418
20² - 3!! + 7(3)
(20×20) - (3×1) + 21
400 - 3 + 21
397 + 21
418
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Soal
20² - x!! + 7x
Diketahui
x → 3
Penyelesaian
20² - x!! + 7x
x → 3
= ( 20 × 20 ) - 3!! + 7(3)
= 400 - ( 3 × 1 ) + ( 7 × 3 )
= 400 - 3 + 21
= 397 + 21
= 418
20² - x!! + 7x
20² - 3!! + 7(3)
(20×20) - (3×1) + 21
400 - 3 + 21
397 + 21
418