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anonymous
 one year ago
If (8z − 9)(8z + 9) = az2 − b, what is the value of a?
The value of a is ____________.
anonymous
 one year ago
If (8z − 9)(8z + 9) = az2 − b, what is the value of a? The value of a is ____________.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Im pretty sure its 8 but i want to be sure

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0what did you get for the expansion of (8x  9)(8z + 9)?

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1it is distributive property the coefficients are multiplied \((ax+b) (axc) = (ax \times ax)  (ax \times c) + (ax \times c)  (b\times c)\) if you focused on a, it will be \(a \times a = a^2 \)

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1I am providing the general idea without answering your own homework.

princeharryyy
 one year ago
Best ResponseYou've already chosen the best response.0multiply the left hand side and compare the coefficients according to the power of z

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1the coefficients in the first parenthesis will have to be multiplied to the coefficient in the second parenthesis

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0this question confuses me so bad, i dont understand what your saying, im sorry

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1what is a multiplied by a ?

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1let us use an actual number \(2 \times 2 = ?\)

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1\(4 \times 4 = ? \)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0WAIT its ^2 im so sorry

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1but you are not worried about z nor b you have to worry about a

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1how about \(8 \times 8 = ? \)

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1did you notice that \(2 \times 2 = 2^2\) \(4 \times 4 = 4^2\) \(8 \times 8 = 8^2\)

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1yes, because the coefficient are both 8

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1if the coefficients were different then you will multiply them as well

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can you help with one more?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Consider the functions f(x) = 2x + 1 and g(x) = x2 − 10. What is the value of f[g(3)]? 39 −3 −7 1

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0its like the other one but i dont know it
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