Clara writes the equation (x – 13)(x + 8) = 196 to solve for the missing side length of a rectangle represented by the factor x + 8. what is the missing side length represented by x + 8 units of the rectangle? 7 15 20 28

28

Step-by-step explanation:

Clara writes the equation (x – 13)(x + 8) = 196 to solve for the missing side length of a rectangle represented by the factor x + 8.

LEts solve the equation for x

WE multiply the left hand side using FOIL method

Combine like terms

Now we factor the left hand side

Product is -300 and sum is -5,

Now set each factor =0 and solve for x

Length cannot be negative so we take only x= 20

the missing side length represented by x + 8

7. 153.86 ft

8. 12.56 ft

9. 78.5 m

10. 379.94 in

11. 132.665 m

12. 12.56 yd

13. 226.865 ft

14. 113.04 ft

15. 63.585 ft

16. 254.34 m

17. 50.24 cm

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