*) \(2x^2-13x-24=2x^2+3x-16x-24\)
\(=x\left(2x+3\right)-8\left(2x+3\right)=\left(x-8\right)\left(2x+3\right)\)
*) \(3x^2+16x+5=3x^2+x+15x+5\)
\(=x\left(3x+1\right)+5\left(3x+1\right)=\left(x+5\right)\left(3x+1\right)\)
*) \(15x^2+x-28=15x^2-20x+21x-28\)
\(=5x\left(3x-4\right)+7\left(3x-4\right)=\left(5x+7\right)\left(3x-4\right)\)
*) \(35x^2-18y^2+83xy=35x^2-7xy+90xy-18y^2\)
\(=7x\left(5x-y\right)+18y\left(5x-y\right)=\left(7x+18y\right)\left(5x-y\right)\)
*) \(6x^2-7x-49=6x^2+14x-21x-49\)
\(=2x\left(3x+7\right)-7\left(3x+7\right)=\left(2x-7\right)\left(3x+7\right)\)
*) \(15x^2-22x-5=15x^2+3x-25x-5\)
\(=3x\left(5x+1\right)-5\left(5x+1\right)=\left(3x-5\right)\left(5x+1\right)\)
*) \(2x^2-3x-9=2x^2+3x-6x-9\)
\(=x\left(2x+3\right)-3\left(2x+3\right)=\left(x-3\right)\left(2x+3\right)\)
nhờ mn là giúp mình với ạ , minh đang cần gấp :( 