text: 1. = 4(6x^2 - 11xy - 10y^2)\n    = 4(3x + 2y)(2x - 5y)\n\n2. = (4a - b)(4a + b)\n\nThere are not easy to show steps over the internet, just start by factoring out the numbers, in this case the "4" in number 1, then they are easier to approach.