What is the factorization of the expression below? 16x2 - 49
O A. (8x-7)(2x-7)
B. (8x + 7)(2x-7)
C. (4x+ 7)(4x-7)
D. (4x-7)(4x-7)
SUBMIT

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.