Question

Bài 1:Với a =-2,biết

a)M=a+a

b)N=a-a

c)P=axa

Answer 1

a) M = a + a = 2a = 2.(-2) = -4

b) N = a - a = 0

c) P = a . a = a² = (-2)² = 4

Answer 2

a) m=(-2)+(-2)=-4

b) N= (-2)-(-2)=0

c)P=(-2).(-2)=4

Answer 3

a) M = a + a = a x 2 = -2 x 2 = -4

b) N = a - a = -2 - (-2) = 0

c) P = a x a = -2 x (-2) = 4 

Answer 4

a,M=-4

b,N=0

c,P=4

Answer 5

a)M=a+a=ax2=-2x2=-4

b)N=a-a=-2-2=0

c)P=axa=-2x(-2)=4

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