2x^2 + 3x - 12, when x = 5

solve this and I'll give you brainliest.

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Which system of linear inequalities is represented by the graph? !

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document