Nilai suku banyak x5 + 3x − 8x + 2 untuk x = −2 adalah … A. – 4 C. 2 – B. – 3 D. 0 E. 2​

Penjelasan dengan langkah-langkah:

x5 + 3x – 8x + 2

( – 2 )( 5 ) + 3( – 2 ) – 8( – 2 ) + 2

( – 10 ) + ( – 6 ) – ( – 16 ) + 2

( – 16 ) – ( – 16 ) + 2

0 + 2

= 2 (e)

SOAL 1

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5x + 3x – 8x + 2

x → -2

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5(-2) + 3(-2) – 8(-2) + 2

= (-10) + (-6) – (-16) + 2

= (-10) – 6 + 16 + 2

= (-10) – 6 + 18

= (-10) + 12

= 2 [ E. ]

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