-5ab + 7ab -9ab + ab -2ab ... Let's simplify that a bit:ab(-5+7-9+1-2) = -8ab
2ab - 3b2 - 3b + 2a does not have a solution, as it is not an equation.
42 72
the answer to factorising (a x a3 + 2ab + b2) would be (a4+2ab+b2)
k can be 2 or -2. A binomial squared is: (a + b)² = a² + 2ab + b² Given x² - 5kx + 25 = (a + b)² = a² + 2ab + b² we find: a² = x² → a = ±x 2ab = -5kx b² = 25 → b = ±5 If we let a = x, then: 2ab = 2xb = -5kx → 2 × ±5 = -5k → k = ±2 If k = 2 then the binomial is (x - 5)² If k = -2 then the binomial is (x + 5)² To be complete if a = -x, then: If k = 2 then the binomial is (-x + 5)² If k = -2 then the binomial is (-x - 5)² which are the negatives of the binomials being squared.
-5ab + 7ab -9ab + ab -2ab ... Let's simplify that a bit:ab(-5+7-9+1-2) = -8ab
4ab - 2a - 7
b/2=2ab/+b means112.5
(a2+2b2-2ab)(a2+2b2+2ab)
2ab - 3b2 - 3b + 2a does not have a solution, as it is not an equation.
2ab
5ab-2ab+4a-b+5b = 3ab+4a+4b
a square plus 2ab plus b square
-2ab
42 72
the answer to factorising (a x a3 + 2ab + b2) would be (a4+2ab+b2)
Remember to factor out the GCF of the coefficients if there is one. A perfect square binomial will always follow the pattern a squared plus or minus 2ab plus b squared. If it's plus 2ab, that factors to (a + b)(a + b) If it's minus 2ab, that factors to (a - b)(a - b)