Chapter 10 QuadratiC EQuations 383
Quiz
- If ( xx– 89 )( )+ = 0 , then
a. x=89,
b. x=− −89,
C. x=−89,
d. x=−89,
- To apply the quadratic formula 34 xx^2 + = 8 ,
a. ab== 34 ,,c= 8
b. ab==−= 34 ,,c 8
C. ab== 34 ,,c=− 8
d. ab==−=− 34 ,,c 8
- Simplify^640
4
± (^).
a.^310
2
±
b.^340
2
±
C. 31 ± 0
d. −± 310
- If xx^2 – – 90 = , then
a. x=−±^137
2
b. x=^13 ±^7
2
C. x=−±^135
2
d. x=^13 ±^5
2