Solve the equation $$$|2 x-5|=|x+6|$$$. ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................

Mathematics

IGCSE&ALevel

CAIE

Exam No：9709_w20_qp_21 Year：2020 Question No：4(a)

Answer:

State or imply non-modulus equation $(2 x-5)^{2}=(x+6)^{2}$ or pair of linear equations
Attempt solution of 3-term quadratic equation or of pair of linear equations
Obtain $-\frac{1}{3}$ and 11

Knowledge points:

2.1.1 understand the meaning of |x| , sketch the graph of y = |ax + b| and use relations such as |a| = |b| a - b < x < a + b when solving equations and inequalities (Graphs of and for non-linear functions are not included.)

Answer:

Knowledge points:

Solution:

Related Question