Exercise ID134

Algebra → Exponents → Powers
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Evaluate the following expression:

2x+2-x22-2x-2-x22

2x+2-x22-2x-2-x22 =2x+12x222-2x-12x222 =2x·2x+12x2221-2x·2x-12x2221 =22x+1222·22x-22x-1222·22x =22x+12-22x-1222x+2 =22x2+2·22x·1+1-22x2-22x·2+12·+2 =24x+22x+1+1-24x+22x+1-122x-2 =2·22x+122x+2 =22x+1+122x+2 =22x+222x+2 =1
2x+2-x22-2x-2-x22=1
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