Grade 12th passAlgebra
Simplify these expressions and find their values if x = 3, a = – 1, b = – 2.2a – 2b – 4 – 5 + a
Simplify these expressions and find their values if x = 3, a = – 1, b = – 2.
2a – 2b – 4 – 5 + a
1 Answer
Harshit Singh
Dear Student
From the question it is given that a = -1, b = -2
We have,
= 2a + a–2b–4 - 5
= 3a–2b - 9
Then, substitute the value of a and b in the equation
= (3 × (-1))–(2 × (-2))–9
= -3–(-4)–9
= - 3 +4–9
= -12 + 4
= –8
Thanks
From the question it is given that a = -1, b = -2
We have,
= 2a + a–2b–4 - 5
= 3a–2b - 9
Then, substitute the value of a and b in the equation
= (3 × (-1))–(2 × (-2))–9
= -3–(-4)–9
= - 3 +4–9
= -12 + 4
= –8
Thanks
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