Bonjour mes amis svp aidez-moi c'est très urgent : figure A= -2√3 ×5√21×√7 I= √25+√36-√121 B= √3²+4²+25×4-4 E=(√20-√5) ² J= √√16+5

Bonjour,

A= -2√3 ×5√21×√7
A = -2V3 x 5V(3 x 7) x V7
A = -2 x 5 x V(3x3) x V(7x7)
A = -2 x 5 x 3 x 7
A = -10 x 21
A = -210

I= √25+√36-√121
I = V(5x5) + V(6x6) - V(11x11)
I = 5 + 6 - 11
I = 0

B= √3²+4²+25×4-4
B = 3 + 16 + 100 - 4
B = 115

E=(√20-√5) ²
E = 20 - 2V100 + 5
E = 20 - 2V(10x10) + 5
E = 25 - 2x10
E = 5

J= √√16+5
J = V(V21) ?

F= (√71-√31)(√71+31)
F = (a - b)(a + b) = a^2 - b^2
F = 71 - 31
F = 40

C= √7√2²+3²+6²-√√2²×3²×6 ²
C = 2V7 + 9 + 36 - V(2 x 3 x 6)
C = 2V7 + 45 - V36
C = 2V7 + 45 - 6
C = 2V7 + 39

D= 2√125×√45:3√3√100+6
D = 2V(25)^2 x V(3^2x5) / (3V3 x V100) + 6
D = 2 x 5 x 3V5/(3V3 x 10) + 6
D = 30V5/30V3 + 6
D = V5/V3 + 6
D = V5 x V3 / 3 + 6V3
D = V15/3 + 6V3

H= 2√75×√27×(3√3√100+6)^-1
H = 2V(3x5^2) x V(3^3) x (3V3V(10)^2+6)^(-1)
H = 10V3 x 3V3 / (30V3 + 6)
H = 90 / 6(5V3 + 1)
H = 15 / (5V3 + 1)

G= √6-2√5×√6+2√5
G = V6 - 2V30 + 2V5