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Which expression is equivalent to ＋3x - 40?

Which expression is equivalent to 9x² + 7x²+9x?

Which expression is equivalent to 9x² ＋5x?

Which expression is equivalent to (2x²+ x - 9) + (x² + 6x ＋ 1)?

Which of the following expressions is(are) a factor of 3x² + 20x - 63?
I.x - 9
II.3x - 7

Which expression is equivalent to 5x² - 50xy²?

The expression 4x² + bx - 45, where b is a constant, can be rewritten as (hx + k)(x +j), where h, k, and j are integer constants. Which of the following must be an integer?

Which expression is equivalent to\( \left(x^2+11\right)^2+\left(x-5\right)\left(x+5\right) \) ?

Which expression is equivalent to \( 23x^3+2x^2+9x \) ?

Which expression is equivalent to \( \left(9x^3+5x+7\right)+\left(6x^3+5x^2-5\right) \) ?

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

In the expression 3(2x² + px + 8) - 16x(p + 4) , p is a constant. This expression is equivalent to the expression 6x² -155x + 24. What is the value of p ?