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Factorise this.... 16c4-81d4 |
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Answer» Step-by-step explanation: Changes made to your input should not affect the solution: (1): "d4" was REPLACED by "d^4". 1 more similar replacement(s). STEP 1 : Equation at the end of step 1 (16 • (c4)) - 34d4 STEP 2 : Equation at the end of step 2 : 24c4 - 34d4 STEP 3 : Trying to factor as a Difference of Squares 3.1 Factoring: 16c4-81d4 Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B) Proof : (A+B) • (A-B) = A2 - AB + BA - B2 = A2 - AB + AB - B2 = A2 - B2 Note : AB = BA is the COMMUTATIVE property of multiplication. Note : - AB + AB equals zero and is therefore eliminated from the expression. Check : 16 is the square of 4 Check : 81 is the square of 9 Check : c4 is the square of c2 Check : d4 is the square of d2 Factorization is : (4c2 + 9d2) • (4c2 - 9d2) Trying to factor as a Difference of Squares: 3.2 Factoring: 4c2 - 9d2 Check : 4 is the square of 2 Check : 9 is the square of 3 Check : c2 is the square of c1 Check : d2 is the square of d1 Factorization is : (2C + 3d) • (2c - 3d) Final result : (4c2 + 9d2) • (2c + 3d) • (2c - 3d) mark me as brainiest |
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