Solve the equations by (a) completing the square and (b)factoring. 14) y 2 + 15y

Question

Solve the equations by (a) completing the square and (b)factoring. 14) y2 + 15y + 56 = 0 16) 3c2 - 7c = 6 18) 4n2 + 12n + 5 = 0 Promise to give full points to the first person who answersall 3. :) Solve. Write irrational roots in simplest radical form. 20) 2y2/3 - y - 3 = 0 22) a2 + a/3 = 3 24) y2/2 - y/4 = 3 Solve the equations by (a) completing the square and (b)factoring. 14) y2 + 15y + 56 = 0 16) 3c2 - 7c = 6 18) 4n2 + 12n + 5 = 0 Promise to give full points to the first person who answersall 3. :) Solve. Write irrational roots in simplest radical form. 20) 2y2/3 - y - 3 = 0 22) a2 + a/3 = 3 24) y2/2 - y/4 = 3

Explanation / Answer

14) Factoring this gives (y+7)(y+8)=0, so the two solutionsare y = -7 and y = -8. 16) Subtracting 6 from both sides gives3c2-7c-6=0. This factors as (3c+2)(c-3)=0. This gives the two soultions c=-2/3 and c=3. 18) This factors as (2n+5)(2n+1)=0, so the two solutions aren=-5/2 and n=-1/2.

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.