if x = -1 2 is a 0 of the polynomial p( x) = 8x³ - ax² - x + 2 find the value of a
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if x=-12 is a zero of the polynomial
p(-12) =8(-12)³ -a (-12)²-(-12)+2 =0
= 8×-1728 -a×144 +14 =0
= - 13824 -144a+14 =0
= -13810 -144a =0
=-144a =13810
=a = 95.90 (approx)
p(-12) =8(-12)³ -a (-12)²-(-12)+2 =0
= 8×-1728 -a×144 +14 =0
= - 13824 -144a+14 =0
= -13810 -144a =0
=-144a =13810
=a = 95.90 (approx)
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