Question

81x² - 49y? factorise​

Answer 1

81x2-126xy+49y2

Final result :

(9x - 7y)2

Step by step solution :

Step 1 :

Equation at the end of step 1 :

((81 • (x2)) - 126xy) + 72y2

Step 2 :

Equation at the end of step 2 :

(34x2 - 126xy) + 72y2