Question

(3x+7)^2 -84x =(3x-7)^2

Answer 1

(3x+7)2−84x=(3x−7)2Step 1: Simplify both sides of the equation.9x2−42x+49=9x2−42x+49Step 2: Subtract 9x^2 from both sides.9x2−42x+49−9x2=9x2−42x+49−9x2−42x+49=−42x+49Step 3: Add 42x to both sides.−42x+49+42x=−42x+49+42x49=49Step 4: Subtract 49 from both sides.49−49=49−490=0