Find the value of (2a + 2B + 1) (2b-a-1) + (a-b + 1) ^ 2, where a = half, B = - 1 ^ - 1

Find the value of (2a + 2B + 1) (2b-a-1) + (a-b + 1) ^ 2, where a = half, B = - 1 ^ - 1

（2a+2b+1）*（2b-a-1）+（a-b+1）²=[2*1/2+2*(-1)+1]*[2*(-1)-1/2-1]+[1/2-(-1)+1]²=(1-2+1)*(-2-1/2-1)+(1/2+1+1)²=0*（-7/2）+(5/2)²=0+25/4=25/4

Elden Ring Premiere

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