Saved Bookmarks
| 1. |
Help for my question pls |
|
Answer» a) 19.5 is the answer. b) 0.26 is the answer. c) 4 is the answer. Step-by-step explanation: a) (3+√5) (2+√3) = (3+2.23) (2+1.73) = (5.23) (3.73) = 19.5. b) (√5-√3)² is SIMILAR as (a- b)² formula so, a=√5,b=√3 and the formula is a²-2ab+b² when we use that formula (√5-√3)² = (√5)²-2√15+(√3)² = (5)-2√15+(3) = 8-2√15 = 8-2(3.87) = 8-7.74 = 0.26 c) (√11+√7) (√11-√7) is similar as (a+b) (a-b) formula so, a=√11,b=√7 and the formula is a²-b² when we use that formula (√11+√7) (√11-√7) = (√11)²- (√7)² = (11) - (7) = 4
HOPE you UNDERSTAND and it helps.
|
|