find the value of the polynomial 3x²+2x-5 at x= (-2)²
Answers
Answered by
1
Answer:
51
Step-by-step explanation:
-2 squared=4
=> 3*4sq+2(4)-5
=3(16)+2(4)-5
=48+8-5
=56-5
=51
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Answered by
1
Answer:
-75
Step-by-step explanation:
3×(-2^2)^2+2×(-2^2)-5
3×(-4)^2+2×(-4)-5
3×(-16)-8-5
-63-8-5
-75
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