exercise 2.4 🤯| part 2 | polynomials 🔥🔥| chapter 2 | class 9 #maths #infinixclasses #youtube
exercise 2.4 🤯| part 2 | polynomials 🔥🔥| chapter 2 | class 9 #maths #infinixclasses #youtube exercise question, viral maths concepts, important maths concept, basic maths ideas, maths useful tricks, basic maths, learn basic maths, basic maths concept, polynomials, class 9 ncert, class 9 maths, class 9 maths ncert, maths by faiz sir, infinix classes, basic maths learning, maths made easy, easy way to learn maths, maths simple way to learn, how to learn maths quickly, maths important concepts, ssc chsl syllabus, ssc maths syllabus, ssc cgl maths, #mathsbyfaizsir #mathshorts #mathskills #mathstrick #mathsquiz #maths_tricks #maths_magic #maths_trick #mathsclass9chapter2 #mathsclass9 #class9mathschapter1 #class9mathshindimedium #class9th #class9thchapter2 #class9thmathsclassesinhindi #class9math #class9cbse #polynomialsclass10 #polynomials #polynomialsclass9th #polynomialsexercise2 #gopalganj #gopalganj_district #onlineclasses #hybrid #smartclassrooms #benchmark @infinixclasses 8. Factorise each of the following: (i) 8a3 + b3 + 12a2b + 6ab2 (ii) 8a3 – b3 – 12a2b + 6ab2 (iii) 27 – 125a3 – 135a + 225a2 (iv) 64a3 – 27b3 – 144a2b + 108ab2 (v) 27p3 – 1/216 – 9/2 p2 + 1/4 p 9. Verify : (i) x3 + y3 = (x + y) (x2 – xy + y2) (ii) x3 – y3 = (x – y) (x2 + xy + y2) 10. Factorise each of the following: (i) 27y3 + 125z3 (ii) 64m3 – 343n3 11. Factorise : 27x3 + y3 + z3 – 9xyz 12. Verify that x3 + y3 + z3 – 3xyz = 1/2 (x + y + z)[(x - y)2 + (y - z)2 + (z - x)2] 13. If x + y + z = 0, show that x3 + y3 + z3 = 3xyz. 14. Without actually calculating the cubes, find the value of each of the following: (i) (–12)3 + (7)3 + (5)3 (ii) (28)3 + (–15)3 + (–13)3 15. Give possible expressions for the length and breadth of each of the following rectangles, in which their areas are given: (i) Area : 25a2 – 35a + 12 (ii) Area : 35y2 + 13y –12 16. What are the possible expressions for the dimensions of the cuboids whose volumes are given below? (i) Volume : 3x2 – 12x (ii) Volume : 12ky2 + 8ky – 20k
