How to write (3x - 7) (5x + 3) in standard form

15x^2 -26x - 21

Step-by-step explanation:

We look at the expression and see that we're going to end up multiplying two terms with x together to get a largest factor of x^2, giving us a quadratic equation. A quadratic equation is in standard form when it's of the form ax^2 + bc + c

First, FOIL your terms:

(3x - 7) (5x + 3) = 5x*3x + 3x*3 + -7*5x + -7*3 = 15x^2 + 9x - 35x - 21

Now combine like terms and reorder if necessary:

15x^2 -26x - 21

mr. graef told us it is 13 pints

step-by-step explanation:

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions