What number, when substituted for x in the following problem, will make the problem true? 6x + 8x = 10x How can you insert two radical signs in the following problem to make it true? 5 = 4 + 4 + 4⁄4 Square the following numbers. a. 4 b. 6 c. 13 d. 10 Cube the following numbers. a. 1 b. 2 c. 4 d. 8 Rewrite the following exponential abbreviations as multiplication problems. a. 22 b. 84 c. 123 d. 205 Write the following multiplications as exponential abbreviations. a. 5 × 5 b. 7 × 7 × 7 × 7 c. 2 × 2 × 2 d. 9 × 9 × 9 × 9 × 9 Write the values of the following exponential abbreviations. a. 33 b. 142 c. 125 d. 90 e. 44 f. 171 Rewrite each number using scientific notation. a. 7,600 b. 23,400 c. 167,000 d. 2,000,000,000 Rewrite each scientific notation as a regular number. a. 9.7 × 104 b. 7 × 105 c. 8.97 × 107 d. 3.2 × 1010 Find each of the following square roots. (Hint: All examples are perfect squares.) a. √16 b. √169 c. √64 d. √400