Answer:
a = - 4
Step-by-step explanation:
Given x = - 2 is a root then f(- 2) = 0
f(x) = x³ + x² + ax - 4, thus
f(- 2) = (- 2)³ + (- 2)² - 2a - 4 = 0, that is
f(- 2) = - 8 + 4 - 2a - 4 = 0, thus
- 8 - 2a = 0 ( add 8 to both sides )
- 2a = 8 ( divide both sides by - 2 )
a = - 4
The square root of 78 is a number which when multiplied by itself results in 78. The square root of 78 is denoted by √78. 78 can be expressed as 78 = 2 × 3 × 13. Hence, on simplifying square root of 78 is written as √78
so the least number is root 78 , 9 , 10
Answer:
1) 151.29 | 2) 413 km | 3) 75 cm
Step-by-step explanation:
1) 12.3 x 12.3 = 151.29 in
2) 17.5 x 23.6 = 413 km
3) 15 x 5 = 75 cm
Answer:
9/16 is the answer
Step-by-step explanation:
3/8÷2/3 =9/16
