Quadratic formula step by step:)

x=-4 and x=-1/2

Step-by-step explanation:

2x^2+8x+x+4=0

2x(x+4)+x+4=0

(x+4)(2x+1)=0

x+4=0

2x+1=0

step-by-step explanation:

3,6 and 7.

step-by-step explanation:

a) unit place of 37 is 7

so the unit place of cube of 37 will be

7³= 343=3

the answer is 3.

b) unit place of 56 is 6, so the unit place of cube of 56 will be

6³= 216=6

the answer is 6.

c) unit place of 133 is 3, so the unit place of cube of 133 will be

3³= 27= 7.

the answer is 7.