let A :
[tex]16 {x}^{2} - 81: b:(4x - 9)(4x + 9) [/tex]
if x=4,which statement is true about the given expressions?
a) A>B
b) A<B
c) A=B
d) can not be determined
and why?
[tex]16 {x}^{2} - 81: b:(4x - 9)(4x + 9) [/tex]
if x=4,which statement is true about the given expressions?
a) A>B
b) A<B
c) A=B
d) can not be determined
and why?
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Answer:
c) A=B
Step-by-step explanation:
Simplify the factor by multiplying
16x² - 81 = (4x - 9)(4x + 9)
Add the similar terms
= 16x²+36x-36x-81
= 16x² - 81
Substitute x=4
16x² - 81
= 16(4)² - 81
=16(16)-81
=256-81
=175