( a ) ( 2+ √5 ) ( 2 - √5 )
( b ) ( 7 + 2√3 ) ( 7 -2√3 )
( c ) ( 11-√8 ) ( 11 + √8 )
( d ) ( √5 + √2 )2
( e ) ( √3 + √7 )²
( f ) ( 2 √3 + √5 )²
(g)(√11-√2) ²
( h ) ( √2 -√3 )(√2 + √3 )
( I ) ( √19 - √11 ) ( √19 + √11)
( j ) ( √13 + √29 ) ( √13 - √29 )
( k ) ( 2 √5 + 3√ ) ( 2√5 - 3√7 )
(l ) ( 2 + √3 ) ( 5 + √7 )
( m ) ( √5 + 2) (√11 + 8 )
( n ) (√7 + 3 )( 2 + √5 )
( o ) ( 11 + √7 ) ( 13 + √13 )
Answers
Answer:
a) -1
b) 37
c) 113
d) 7+2√10
e)10+2√21
f) 17+4√15
g) 13-2√22
h) -1
I) 8
j) -16
k)-43
l) 10+2√7+5√3+√21
m) √55+8√5+2√11+16
n)2√7+√35+6+3√5
o)143+11√13+13√7+√91
Mark me as the brainliest
a) ( 2+ √5 ) ( 2 - √5 )
( 2+ √5 ) = ?
( 2- √5 ) = ?
√5 = 2.2360679775
( 2+ √5 ) = 2+ 2.2360679775 = 4.2360679775
( 2- √5 ) = 2- 2.2360679775 = −0.2360679775
4.2360679775 × -0.2360679775
= -1
b) ( 7 + 2√3 ) ( 7 -2√3 )
( 7 + 2√3 ) = ?
( 7 - 2√3 ) = ?
2√3 = 3.4641016151
( 7 + 2√3 ) = 7+ 3.4641016151 = 10.4641016151
( 7 - 2√3 ) = 7- 3.4641016151 = 3.5358983849
10.4641016151 × 3.5358983849
= 37.0000000003
c) ( 11-√8 ) ( 11 + √8 )
( 11-√8 ) = ?
( 11 + √8 ) = ?
√8 = 2.8284271247
( 11-√8 ) = 11 - 2.8284271247 = 8.1715728753
( 11 + √8 ) = 11 + 2.8284271247=13.8284271247
8.1715728753 × 13.8284271247
= 113.0000000003
d) ( √5 + √2 )2
√5 = 2.2360679775
√2 = 1.4142135624
2360679775 + 1.4142135624
= 2,360,679,776.4142
2,360,679,776.4142 × 2
= 4,721,359,552.8284
e) ( √3 + √7 )²
√3 = 1.7320508076
√7 = 2.6457513111
1.7320508076 + 2.6457513111
= 4.3778021187
4.3778021187^2 = 19.1651513905
plz mark me as brilliant......☆☆