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Which expression is equivalent to $9x^2+7x^2+9x$?

Which expression is equivalent to $\left(2x^2+x-9\right)+\left(x^2+6x+1\right)$?

The equation is true for all , where a and d are integers. What is the value of ?

Which of the following expressions is equivalent to  ?

Which of the following is equivalent to the sum of and ?

The expression above can be written in the form , where a and b are constants. What is the value of ?

The expression $6\sqrt[5]{3^5{x}^{45}}·\sqrt[8]{2^{8}x}$ is equivalent to $a{x}^b$, where $a$ and $b$ are positive constants and $x>1$. What is the value of $a+b$?

If the given expression is rewritten in the form , where k is a constant, what is the value of k ?

Which expression represents the product of $\left(x^{-6}{y}^3{z}^5\right)$ and $\left(x^4{z}^5+y^8{z}^{-7}\right)$?

If , which of the following is equivalent to the expression ?

Which of the following is equivalent to the expression above?

Which of the following is equivalent to  ?

Which of the following is equivalent to the given expression?

Which of the following is equivalent to the expression above?

Which of the following expressions is equivalent to the expression above?

Which of the following is equivalent to , where ?

If a and c are positive numbers, which of the following is equivalent to ?

Which expression is equivalent to $8+d^2+3$?

Which of the following expressions is equivalent to ?

$(5x^3-3)-(-4x^3+8)$

The given expression is equivalent to $b{x}^3-11$, where $b$ is a constant. What is the value of $b$?

Which expression is equivalent to $9x+6x+2y+3y$?

Which expression is equivalent to $256w^2-676$?

Which of the following is equivalent to the given expression?

Which expression is equivalent to $\sqrt[7]{x^9{y}^9}$, where $x$ and $y$ are positive?

Which of the following is equivalent to the expression above?