Question

Plz ans it fast.... Thankyou

Answer 1

Answer:

c). a=5 , b=2

Step-by-step explanation:

P = 2x³ + ax² + 2bx + 1

substitute x = -1 in P

P = 2(-1)³ + a(-1)² + 2b(-1) + 1

= -2 + a - 2b + 1

a - 2b = 1 ➝eq. 1

2a - 3b = 4 ➝eq.2

solving eq. 1 & 2 ,we get:

a= 5 , b = 2 (◠‿・)—☆

Answer 2

Answer:

Answer is in above pic

Step-by-step explanation:

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