Calculate the sum of the expression 2^x+2^x+2^x+2^x= ✓ 2^{x+2} × 2^{2x} × 2^{4x} × 2^{2x+2} × 2^{8x} Steven Zheng posted 1 week ago 0 0 0

The sum of the four identical quantities is 4 times of one of those quantities, so the sum of the four terms 2^x is 4 times 2^x 4×2^x = 2^2 × 2^x=2^{x+2} Steven Zheng posted 1 week ago