multiply (2x+5) (7x+3)
Answers
Answer:
Simplifying 0 = (2x + 5)(7x + -3) Reorder the terms: 0 = (5 + 2x)(7x + -3) Reorder the terms: 0 = (5 + 2x)(-3 + 7x) Multiply (5 + 2x) * (-3 + 7x) 0 = (5(-3 + 7x) + 2x * (-3 + 7x)) 0 = ((-3 * 5 + 7x * 5) + 2x * (-3 + 7x)) 0 = ((-15 + 35x) + 2x * (-3 + 7x)) 0 = (-15 + 35x + (-3 * 2x + 7x * 2x)) 0 = (-15 + 35x + (-6x + 14x2)) Combine like terms: 35x + -6x = 29x 0 = (-15 + 29x + 14x2) Solving 0 = -15 + 29x + 14x2 Solving for variable 'x'. Combine like terms: 0 + 15 = 15 15 + -29x + -14x2 = -15 + 29x + 14x2 + 15 + -29x + -14x2 Reorder the terms: 15 + -29x + -14x2 = -15 + 15 + 29x + -29x + 14x2 + -14x2 Combine like terms: -15 + 15 = 0 15 + -29x + -14x2 = 0 + 29x + -29x + 14x2 + -14x2 15 + -29x + -14x2 = 29x + -29x + 14x2 + -14x2 Combine like terms: 29x + -29x = 0 15 + -29x + -14x2 = 0 + 14x2 + -14x2 15 + -29x + -14x2 = 14x2 + -14x2 Combine like terms: 14x2 + -14x2 = 0 15 + -29x + -14x2 = 0 Factor a trinomial. (3 + -7x)(5 + 2x) = 0
Subproblem 1
Set the factor '(3 + -7x)' equal to zero and attempt to solve: Simplifying 3 + -7x = 0 Solving 3 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -7x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -7x = 0 + -3 -7x = 0 + -3 Combine like terms: 0 + -3 = -3 -7x = -3 Divide each side by '-7'. x = 0.4285714286 Simplifying x = 0.4285714286
Subproblem 2
Set the factor '(5 + 2x)' equal to zero and attempt to solve: Simplifying 5 + 2x = 0 Solving 5 + 2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 2x = 0 + -5 2x = 0 + -5 Combine like terms: 0 + -5 = -5 2x = -5 Divide each side by '2'. x = -2.5 Simplifying x = -2.5
Solution
x = {0.4285714286, -2.5}
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2x-2=8 x-3=5 3x+2=18 2x+10=12 6x-2=14 3x=12 4x-2=12 9x-3=6 12+x=5 x+8=13 all equations
Step-by-step explanation:
u only need to multiply each one of the the 1st bracket with the second bracket.such as (2x with 7x and 3) and (5 with 7x and 3).
