I will mark brainliest and heart thanks your answer. Write each quadratic equation in standard form, ax²+ bx + c = 0. Then identify the values of a, b, and c.

1. 2x² + 7x + 3 = 0

2. 5x²- 8x = 9

3. 5x - 4x² = 6

4. X² = 16

5. 10x² + 15x² = 0

6. 3x(x - 6) = 15

7. (x + 7)(x + 2) = 0

8. (2× + 3)(x - 5)= 7

9. (x + 4)(x - 4) = -5x

10. (x - 2)² + 10 = 0

No stupid answer or else I report you!!!

1. x=−1/2,−3

2.  x=4+√61/5,4−√61/5

3.x=5+i√71/8,5−i√71/8

4. X=4,−4

5.x=0

the answer would be 150 books

step-by-step explanation:

if you divide 300 by 2 you will get 150

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.