When the product of 6 and the square of a number is increased by 5 times the number, the result is 4. Which equation represents this situation?

Let the number be x. The product of 6 and the square of the number is 6x², and 5 times the number is 5x. “Increased by” means add them, so 6x² + 5x = 4; moving 4 to the left gives 6x² + 5x − 4 = 0, which is choice A.

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