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29. The linear term of the perfect square trinomial x^2+_____+ 81/4 =0 *
A. - 9
B. 9
C. 9/2
D. -9/2
E. None of the above
29. The linear term of the perfect square trinomial x^2+_____+ 81/4 =0 *
A. - 9
B. 9
C. 9/2
D. -9/2
E. None of the above
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Answer:
B. 9
Step-by-step explanation:
a^2 + 2ab + b^2 = 0
a^2 = x^2
a = x
b^2 = 81/4
b =√(81/4)
b = 9/2
middle term= 2ab
middle term = 2(x)(9/2)
middle term = 9x