Question

COROANA SI 50 PUNCTEPT RASPUNS URGENT

Answer 1

1)= A= (50×51)/2 - 25 ×2=

A= 25×51−25×2=

A= 25×(51-2)=

A= 25×49 = 5² × 7²

√A= 5 ×7 = 35

2)= 120×121/2 + 4×121 =

A= 60 ×121 + 4 ×121 =

A= 121×( 60+4)=

A= 121 × 64 = 11² × 8²

√α= 11×8 =88

3)
A= 60×( 4+60 ) + 64×(64 - 43)

A= 60×64 + 64× 21 =

A= 64×( 60 +21) =

A= 64 x 81 = 8²× 9²=

√A = 8×9= 72

4)

A= 101²− 2×99×101+99²=

A= (101+99)² = 200²

√Α= 200

Answer 2

1) a= (50×51)/2 - 25 ×2=

a= 25×51−25×2=  25×(51-2)=

a= 25×49 = 5² × 7²

√a= 5 ×7 = 35

2)= 120×121/2 + 4×121 =

a= 60 ×121 + 4 ×121 =  121×( 60+4)=

a= 121 × 64 = 11² × 8²

√α= 11×8 =88

3)a= 60×( 4+60 ) + 64×(64 - 43)

a= 60×64 + 64× 21 = 64×( 60 +21) =

a= 64 x 81 = 8²× 9²=

√a = 8×9= 72

4) a= 101²− 2×99×101+99²=

a= (101+99)² = 200²

√a=200

 

sper ca te.am ajutat si sper ca e corect !!