Question

Write the expession 5x²-4-3x²+6x+8-5x-13 in its simplifed form. Find its value when x=-2​

Answer 1

Answer:

2x²+ x - 9= 0

value = -3

Step-by-step explanation:

5x²-4-3x²+6x+8-5 x-13= 0

2x²+x - 9= 0

x= -2,

2(-2)²+ (-2) -9= 0

2×4-2-9=0

8-2-9=0

-3=0

0= -3