Which is equivalent to (4xy – 3z)^2, and what type of special product is it?
16x2y2 +972, the difference of squares
16x2y2+9z2, a perfect square trinomial
16x2y2-24 xyz +9z2, the difference of squares
16x2y2 - 24 xyz +9z2, a perfect square trinomial

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step-by-step explanation:

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the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places

answer: (1,3) (3,-1) (5,-5) ?

step-by-step explanation: